Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 1 | //===- Parser.cpp - MLIR Parser Implementation ----------------------------===// |
| 2 | // |
| 3 | // Copyright 2019 The MLIR Authors. |
| 4 | // |
| 5 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | // you may not use this file except in compliance with the License. |
| 7 | // You may obtain a copy of the License at |
| 8 | // |
| 9 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | // |
| 11 | // Unless required by applicable law or agreed to in writing, software |
| 12 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | // See the License for the specific language governing permissions and |
| 15 | // limitations under the License. |
| 16 | // ============================================================================= |
| 17 | // |
| 18 | // This file implements the parser for the MLIR textual form. |
| 19 | // |
| 20 | //===----------------------------------------------------------------------===// |
| 21 | |
| 22 | #include "mlir/Parser.h" |
| 23 | #include "Lexer.h" |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 24 | #include "mlir/IR/AffineExpr.h" |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 25 | #include "mlir/IR/AffineMap.h" |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 26 | #include "mlir/IR/Attributes.h" |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 27 | #include "mlir/IR/Builders.h" |
Tatiana Shpeisman | c96b587 | 2018-06-28 17:02:32 -0700 | [diff] [blame] | 28 | #include "mlir/IR/MLFunction.h" |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 29 | #include "mlir/IR/MLIRContext.h" |
Chris Lattner | 21e67f6 | 2018-07-06 10:46:19 -0700 | [diff] [blame] | 30 | #include "mlir/IR/Module.h" |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 31 | #include "mlir/IR/OpImplementation.h" |
Chris Lattner | 21e67f6 | 2018-07-06 10:46:19 -0700 | [diff] [blame] | 32 | #include "mlir/IR/OperationSet.h" |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 33 | #include "mlir/IR/StmtVisitor.h" |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 34 | #include "mlir/IR/Types.h" |
James Molloy | f0d2f44 | 2018-08-03 01:54:46 -0700 | [diff] [blame] | 35 | #include "llvm/ADT/DenseMap.h" |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 36 | #include "llvm/Support/PrettyStackTrace.h" |
James Molloy | f0d2f44 | 2018-08-03 01:54:46 -0700 | [diff] [blame] | 37 | #include "llvm/Support/SourceMgr.h" |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 38 | using namespace mlir; |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 39 | using llvm::SMLoc; |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 40 | using llvm::SourceMgr; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 41 | |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 42 | /// Simple enum to make code read better in cases that would otherwise return a |
| 43 | /// bool value. Failure is "true" in a boolean context. |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 44 | enum ParseResult { ParseSuccess, ParseFailure }; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 45 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 46 | namespace { |
| 47 | class Parser; |
| 48 | |
| 49 | /// This class refers to all of the state maintained globally by the parser, |
| 50 | /// such as the current lexer position etc. The Parser base class provides |
| 51 | /// methods to access this. |
| 52 | class ParserState { |
Chris Lattner | ed65a73 | 2018-06-28 20:45:33 -0700 | [diff] [blame] | 53 | public: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 54 | ParserState(llvm::SourceMgr &sourceMgr, Module *module, |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 55 | SMDiagnosticHandlerTy errorReporter) |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 56 | : context(module->getContext()), module(module), |
| 57 | lex(sourceMgr, errorReporter), curToken(lex.lexToken()), |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 58 | errorReporter(errorReporter), operationSet(OperationSet::get(context)) { |
| 59 | } |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 60 | |
| 61 | // A map from affine map identifier to AffineMap. |
| 62 | llvm::StringMap<AffineMap *> affineMapDefinitions; |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 63 | |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 64 | // A map from integer set identifier to IntegerSet. |
| 65 | llvm::StringMap<IntegerSet *> integerSetDefinitions; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 66 | |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 67 | // This keeps track of all forward references to functions along with the |
| 68 | // temporary function used to represent them and the location of the first |
| 69 | // reference. |
| 70 | llvm::DenseMap<Identifier, std::pair<Function *, SMLoc>> functionForwardRefs; |
| 71 | |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 72 | private: |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 73 | ParserState(const ParserState &) = delete; |
| 74 | void operator=(const ParserState &) = delete; |
| 75 | |
| 76 | friend class Parser; |
| 77 | |
| 78 | // The context we're parsing into. |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 79 | MLIRContext *const context; |
| 80 | |
| 81 | // This is the module we are parsing into. |
| 82 | Module *const module; |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 83 | |
| 84 | // The lexer for the source file we're parsing. |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 85 | Lexer lex; |
| 86 | |
| 87 | // This is the next token that hasn't been consumed yet. |
| 88 | Token curToken; |
| 89 | |
Jacques Pienaar | 9c411be | 2018-06-24 19:17:35 -0700 | [diff] [blame] | 90 | // The diagnostic error reporter. |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 91 | SMDiagnosticHandlerTy const errorReporter; |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 92 | |
| 93 | // The active OperationSet we're parsing with. |
| 94 | OperationSet &operationSet; |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 95 | }; |
| 96 | } // end anonymous namespace |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 97 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 98 | namespace { |
| 99 | |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 100 | typedef std::function<Operation *(const OperationState &)> |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 101 | CreateOperationFunction; |
| 102 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 103 | /// This class implement support for parsing global entities like types and |
| 104 | /// shared entities like SSA names. It is intended to be subclassed by |
| 105 | /// specialized subparsers that include state, e.g. when a local symbol table. |
| 106 | class Parser { |
| 107 | public: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 108 | Builder builder; |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 109 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 110 | Parser(ParserState &state) : builder(state.context), state(state) {} |
| 111 | |
| 112 | // Helper methods to get stuff from the parser-global state. |
| 113 | ParserState &getState() const { return state; } |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 114 | MLIRContext *getContext() const { return state.context; } |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 115 | Module *getModule() { return state.module; } |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 116 | OperationSet &getOperationSet() const { return state.operationSet; } |
Chris Lattner | f7bdf95 | 2018-08-05 21:12:29 -0700 | [diff] [blame] | 117 | llvm::SourceMgr &getSourceMgr() { return state.lex.getSourceMgr(); } |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 118 | |
| 119 | /// Return the current token the parser is inspecting. |
| 120 | const Token &getToken() const { return state.curToken; } |
| 121 | StringRef getTokenSpelling() const { return state.curToken.getSpelling(); } |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 122 | |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 123 | /// Encode the specified source location information into an attribute for |
| 124 | /// attachment to the IR. |
| 125 | Attribute *getEncodedSourceLocation(llvm::SMLoc loc); |
| 126 | |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 127 | /// Emit an error and return failure. |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 128 | ParseResult emitError(const Twine &message) { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 129 | return emitError(state.curToken.getLoc(), message); |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 130 | } |
| 131 | ParseResult emitError(SMLoc loc, const Twine &message); |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 132 | |
| 133 | /// Advance the current lexer onto the next token. |
| 134 | void consumeToken() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 135 | assert(state.curToken.isNot(Token::eof, Token::error) && |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 136 | "shouldn't advance past EOF or errors"); |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 137 | state.curToken = state.lex.lexToken(); |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | /// Advance the current lexer onto the next token, asserting what the expected |
| 141 | /// current token is. This is preferred to the above method because it leads |
| 142 | /// to more self-documenting code with better checking. |
Chris Lattner | 8da0c28 | 2018-06-29 11:15:56 -0700 | [diff] [blame] | 143 | void consumeToken(Token::Kind kind) { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 144 | assert(state.curToken.is(kind) && "consumed an unexpected token"); |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 145 | consumeToken(); |
| 146 | } |
| 147 | |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 148 | /// If the current token has the specified kind, consume it and return true. |
| 149 | /// If not, return false. |
Chris Lattner | 8da0c28 | 2018-06-29 11:15:56 -0700 | [diff] [blame] | 150 | bool consumeIf(Token::Kind kind) { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 151 | if (state.curToken.isNot(kind)) |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 152 | return false; |
| 153 | consumeToken(kind); |
| 154 | return true; |
| 155 | } |
| 156 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 157 | /// Consume the specified token if present and return success. On failure, |
| 158 | /// output a diagnostic and return failure. |
| 159 | ParseResult parseToken(Token::Kind expectedToken, const Twine &message); |
| 160 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 161 | /// Parse a comma-separated list of elements up until the specified end token. |
| 162 | ParseResult |
| 163 | parseCommaSeparatedListUntil(Token::Kind rightToken, |
| 164 | const std::function<ParseResult()> &parseElement, |
| 165 | bool allowEmptyList = true); |
| 166 | |
| 167 | /// Parse a comma separated list of elements that must have at least one entry |
| 168 | /// in it. |
| 169 | ParseResult |
| 170 | parseCommaSeparatedList(const std::function<ParseResult()> &parseElement); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 171 | |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 172 | // We have two forms of parsing methods - those that return a non-null |
| 173 | // pointer on success, and those that return a ParseResult to indicate whether |
| 174 | // they returned a failure. The second class fills in by-reference arguments |
| 175 | // as the results of their action. |
| 176 | |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 177 | // Type parsing. |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 178 | VectorType *parseVectorType(); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 179 | ParseResult parseDimensionListRanked(SmallVectorImpl<int> &dimensions); |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 180 | Type *parseTensorType(); |
| 181 | Type *parseMemRefType(); |
| 182 | Type *parseFunctionType(); |
| 183 | Type *parseType(); |
Chris Lattner | 1604e47 | 2018-07-23 08:42:19 -0700 | [diff] [blame] | 184 | ParseResult parseTypeListNoParens(SmallVectorImpl<Type *> &elements); |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 185 | ParseResult parseTypeList(SmallVectorImpl<Type *> &elements); |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 186 | |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 187 | // Attribute parsing. |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 188 | Function *resolveFunctionReference(StringRef nameStr, SMLoc nameLoc, |
| 189 | FunctionType *type); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 190 | Attribute *parseAttribute(); |
| 191 | ParseResult parseAttributeDict(SmallVectorImpl<NamedAttribute> &attributes); |
| 192 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 193 | // Polyhedral structures. |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 194 | AffineMap *parseAffineMapInline(); |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 195 | AffineMap *parseAffineMapReference(); |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 196 | IntegerSet *parseIntegerSetInline(); |
| 197 | IntegerSet *parseIntegerSetReference(); |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 198 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 199 | private: |
| 200 | // The Parser is subclassed and reinstantiated. Do not add additional |
| 201 | // non-trivial state here, add it to the ParserState class. |
| 202 | ParserState &state; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 203 | }; |
| 204 | } // end anonymous namespace |
| 205 | |
| 206 | //===----------------------------------------------------------------------===// |
| 207 | // Helper methods. |
| 208 | //===----------------------------------------------------------------------===// |
| 209 | |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 210 | /// Encode the specified source location information into an attribute for |
| 211 | /// attachment to the IR. |
| 212 | Attribute *Parser::getEncodedSourceLocation(llvm::SMLoc loc) { |
| 213 | // TODO(clattner): Switch to an more structured form that includes |
| 214 | // file/line/column instead of just byte offset in the file. This will |
| 215 | // eliminate this block of low level code poking at the SourceMgr directly. |
| 216 | auto &sourceMgr = getSourceMgr(); |
| 217 | auto fileID = sourceMgr.FindBufferContainingLoc(loc); |
| 218 | |
| 219 | auto *srcBuffer = sourceMgr.getMemoryBuffer(fileID); |
| 220 | unsigned locationEncoding = loc.getPointer() - srcBuffer->getBufferStart(); |
| 221 | return builder.getIntegerAttr(locationEncoding); |
| 222 | } |
| 223 | |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 224 | ParseResult Parser::emitError(SMLoc loc, const Twine &message) { |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 225 | // If we hit a parse error in response to a lexer error, then the lexer |
Jacques Pienaar | 9c411be | 2018-06-24 19:17:35 -0700 | [diff] [blame] | 226 | // already reported the error. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 227 | if (getToken().is(Token::error)) |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 228 | return ParseFailure; |
| 229 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 230 | auto &sourceMgr = state.lex.getSourceMgr(); |
| 231 | state.errorReporter(sourceMgr.GetMessage(loc, SourceMgr::DK_Error, message)); |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 232 | return ParseFailure; |
| 233 | } |
| 234 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 235 | /// Consume the specified token if present and return success. On failure, |
| 236 | /// output a diagnostic and return failure. |
| 237 | ParseResult Parser::parseToken(Token::Kind expectedToken, |
| 238 | const Twine &message) { |
| 239 | if (consumeIf(expectedToken)) |
| 240 | return ParseSuccess; |
| 241 | return emitError(message); |
| 242 | } |
| 243 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 244 | /// Parse a comma separated list of elements that must have at least one entry |
| 245 | /// in it. |
| 246 | ParseResult Parser::parseCommaSeparatedList( |
| 247 | const std::function<ParseResult()> &parseElement) { |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 248 | // Non-empty case starts with an element. |
| 249 | if (parseElement()) |
| 250 | return ParseFailure; |
| 251 | |
| 252 | // Otherwise we have a list of comma separated elements. |
| 253 | while (consumeIf(Token::comma)) { |
| 254 | if (parseElement()) |
| 255 | return ParseFailure; |
| 256 | } |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 257 | return ParseSuccess; |
| 258 | } |
| 259 | |
| 260 | /// Parse a comma-separated list of elements, terminated with an arbitrary |
| 261 | /// token. This allows empty lists if allowEmptyList is true. |
| 262 | /// |
| 263 | /// abstract-list ::= rightToken // if allowEmptyList == true |
| 264 | /// abstract-list ::= element (',' element)* rightToken |
| 265 | /// |
| 266 | ParseResult Parser::parseCommaSeparatedListUntil( |
| 267 | Token::Kind rightToken, const std::function<ParseResult()> &parseElement, |
| 268 | bool allowEmptyList) { |
| 269 | // Handle the empty case. |
| 270 | if (getToken().is(rightToken)) { |
| 271 | if (!allowEmptyList) |
| 272 | return emitError("expected list element"); |
| 273 | consumeToken(rightToken); |
| 274 | return ParseSuccess; |
| 275 | } |
| 276 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 277 | if (parseCommaSeparatedList(parseElement) || |
| 278 | parseToken(rightToken, "expected ',' or '" + |
| 279 | Token::getTokenSpelling(rightToken) + "'")) |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 280 | return ParseFailure; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 281 | |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 282 | return ParseSuccess; |
| 283 | } |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 284 | |
| 285 | //===----------------------------------------------------------------------===// |
| 286 | // Type Parsing |
| 287 | //===----------------------------------------------------------------------===// |
| 288 | |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 289 | /// Parse an arbitrary type. |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 290 | /// |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 291 | /// type ::= integer-type |
| 292 | /// | float-type |
| 293 | /// | other-type |
| 294 | /// | vector-type |
| 295 | /// | tensor-type |
| 296 | /// | memref-type |
| 297 | /// | function-type |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 298 | /// |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 299 | /// float-type ::= `f16` | `bf16` | `f32` | `f64` |
| 300 | /// other-type ::= `affineint` | `tf_control` |
| 301 | /// |
| 302 | Type *Parser::parseType() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 303 | switch (getToken().getKind()) { |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 304 | default: |
| 305 | return (emitError("expected type"), nullptr); |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 306 | case Token::kw_memref: |
| 307 | return parseMemRefType(); |
| 308 | case Token::kw_tensor: |
| 309 | return parseTensorType(); |
| 310 | case Token::kw_vector: |
| 311 | return parseVectorType(); |
| 312 | case Token::l_paren: |
| 313 | return parseFunctionType(); |
| 314 | // integer-type |
| 315 | case Token::inttype: { |
| 316 | auto width = getToken().getIntTypeBitwidth(); |
| 317 | if (!width.hasValue()) |
| 318 | return (emitError("invalid integer width"), nullptr); |
Nicolas Vasilache | 1b8c084 | 2018-08-27 10:26:15 -0700 | [diff] [blame^] | 319 | if (width > IntegerType::kMaxWidth) |
| 320 | return (emitError("integer bitwidth is limited to " + |
| 321 | Twine(IntegerType::kMaxWidth) + " bits"), |
| 322 | nullptr); |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 323 | consumeToken(Token::inttype); |
| 324 | return builder.getIntegerType(width.getValue()); |
| 325 | } |
| 326 | |
| 327 | // float-type |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 328 | case Token::kw_bf16: |
| 329 | consumeToken(Token::kw_bf16); |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 330 | return builder.getBF16Type(); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 331 | case Token::kw_f16: |
| 332 | consumeToken(Token::kw_f16); |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 333 | return builder.getF16Type(); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 334 | case Token::kw_f32: |
| 335 | consumeToken(Token::kw_f32); |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 336 | return builder.getF32Type(); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 337 | case Token::kw_f64: |
| 338 | consumeToken(Token::kw_f64); |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 339 | return builder.getF64Type(); |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 340 | |
| 341 | // other-type |
Chris Lattner | f958bbe | 2018-06-29 22:08:05 -0700 | [diff] [blame] | 342 | case Token::kw_affineint: |
| 343 | consumeToken(Token::kw_affineint); |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 344 | return builder.getAffineIntType(); |
Jacques Pienaar | c0d6930 | 2018-07-27 11:07:12 -0700 | [diff] [blame] | 345 | case Token::kw_tf_control: |
| 346 | consumeToken(Token::kw_tf_control); |
| 347 | return builder.getTFControlType(); |
James Molloy | 72b0cbe | 2018-08-01 12:55:27 -0700 | [diff] [blame] | 348 | case Token::kw_tf_string: |
| 349 | consumeToken(Token::kw_tf_string); |
| 350 | return builder.getTFStringType(); |
Chris Lattner | f958bbe | 2018-06-29 22:08:05 -0700 | [diff] [blame] | 351 | } |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | /// Parse a vector type. |
| 355 | /// |
| 356 | /// vector-type ::= `vector` `<` const-dimension-list primitive-type `>` |
| 357 | /// const-dimension-list ::= (integer-literal `x`)+ |
| 358 | /// |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 359 | VectorType *Parser::parseVectorType() { |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 360 | consumeToken(Token::kw_vector); |
| 361 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 362 | if (parseToken(Token::less, "expected '<' in vector type")) |
| 363 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 364 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 365 | if (getToken().isNot(Token::integer)) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 366 | return (emitError("expected dimension size in vector type"), nullptr); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 367 | |
| 368 | SmallVector<unsigned, 4> dimensions; |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 369 | while (getToken().is(Token::integer)) { |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 370 | // Make sure this integer value is in bound and valid. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 371 | auto dimension = getToken().getUnsignedIntegerValue(); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 372 | if (!dimension.hasValue()) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 373 | return (emitError("invalid dimension in vector type"), nullptr); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 374 | dimensions.push_back(dimension.getValue()); |
| 375 | |
| 376 | consumeToken(Token::integer); |
| 377 | |
| 378 | // Make sure we have an 'x' or something like 'xbf32'. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 379 | if (getToken().isNot(Token::bare_identifier) || |
| 380 | getTokenSpelling()[0] != 'x') |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 381 | return (emitError("expected 'x' in vector dimension list"), nullptr); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 382 | |
| 383 | // If we had a prefix of 'x', lex the next token immediately after the 'x'. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 384 | if (getTokenSpelling().size() != 1) |
| 385 | state.lex.resetPointer(getTokenSpelling().data() + 1); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 386 | |
| 387 | // Consume the 'x'. |
| 388 | consumeToken(Token::bare_identifier); |
| 389 | } |
| 390 | |
| 391 | // Parse the element type. |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 392 | auto typeLoc = getToken().getLoc(); |
| 393 | auto *elementType = parseType(); |
| 394 | if (!elementType || parseToken(Token::greater, "expected '>' in vector type")) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 395 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 396 | |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 397 | if (!isa<FloatType>(elementType) && !isa<IntegerType>(elementType)) |
| 398 | return (emitError(typeLoc, "invalid vector element type"), nullptr); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 399 | |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 400 | return VectorType::get(dimensions, elementType); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | /// Parse a dimension list of a tensor or memref type. This populates the |
| 404 | /// dimension list, returning -1 for the '?' dimensions. |
| 405 | /// |
| 406 | /// dimension-list-ranked ::= (dimension `x`)* |
| 407 | /// dimension ::= `?` | integer-literal |
| 408 | /// |
| 409 | ParseResult Parser::parseDimensionListRanked(SmallVectorImpl<int> &dimensions) { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 410 | while (getToken().isAny(Token::integer, Token::question)) { |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 411 | if (consumeIf(Token::question)) { |
| 412 | dimensions.push_back(-1); |
| 413 | } else { |
| 414 | // Make sure this integer value is in bound and valid. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 415 | auto dimension = getToken().getUnsignedIntegerValue(); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 416 | if (!dimension.hasValue() || (int)dimension.getValue() < 0) |
| 417 | return emitError("invalid dimension"); |
| 418 | dimensions.push_back((int)dimension.getValue()); |
| 419 | consumeToken(Token::integer); |
| 420 | } |
| 421 | |
| 422 | // Make sure we have an 'x' or something like 'xbf32'. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 423 | if (getToken().isNot(Token::bare_identifier) || |
| 424 | getTokenSpelling()[0] != 'x') |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 425 | return emitError("expected 'x' in dimension list"); |
| 426 | |
| 427 | // If we had a prefix of 'x', lex the next token immediately after the 'x'. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 428 | if (getTokenSpelling().size() != 1) |
| 429 | state.lex.resetPointer(getTokenSpelling().data() + 1); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 430 | |
| 431 | // Consume the 'x'. |
| 432 | consumeToken(Token::bare_identifier); |
| 433 | } |
| 434 | |
| 435 | return ParseSuccess; |
| 436 | } |
| 437 | |
| 438 | /// Parse a tensor type. |
| 439 | /// |
| 440 | /// tensor-type ::= `tensor` `<` dimension-list element-type `>` |
| 441 | /// dimension-list ::= dimension-list-ranked | `??` |
| 442 | /// |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 443 | Type *Parser::parseTensorType() { |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 444 | consumeToken(Token::kw_tensor); |
| 445 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 446 | if (parseToken(Token::less, "expected '<' in tensor type")) |
| 447 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 448 | |
| 449 | bool isUnranked; |
| 450 | SmallVector<int, 4> dimensions; |
| 451 | |
| 452 | if (consumeIf(Token::questionquestion)) { |
| 453 | isUnranked = true; |
| 454 | } else { |
| 455 | isUnranked = false; |
| 456 | if (parseDimensionListRanked(dimensions)) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 457 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 458 | } |
| 459 | |
| 460 | // Parse the element type. |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 461 | auto typeLoc = getToken().getLoc(); |
| 462 | auto *elementType = parseType(); |
| 463 | if (!elementType || parseToken(Token::greater, "expected '>' in tensor type")) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 464 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 465 | |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 466 | if (!isa<IntegerType>(elementType) && !isa<FloatType>(elementType) && |
| 467 | !isa<VectorType>(elementType)) |
| 468 | return (emitError(typeLoc, "invalid tensor element type"), nullptr); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 469 | |
MLIR Team | 355ec86 | 2018-06-23 18:09:09 -0700 | [diff] [blame] | 470 | if (isUnranked) |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 471 | return builder.getTensorType(elementType); |
| 472 | return builder.getTensorType(dimensions, elementType); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | /// Parse a memref type. |
| 476 | /// |
| 477 | /// memref-type ::= `memref` `<` dimension-list-ranked element-type |
| 478 | /// (`,` semi-affine-map-composition)? (`,` memory-space)? `>` |
| 479 | /// |
| 480 | /// semi-affine-map-composition ::= (semi-affine-map `,` )* semi-affine-map |
| 481 | /// memory-space ::= integer-literal /* | TODO: address-space-id */ |
| 482 | /// |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 483 | Type *Parser::parseMemRefType() { |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 484 | consumeToken(Token::kw_memref); |
| 485 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 486 | if (parseToken(Token::less, "expected '<' in memref type")) |
| 487 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 488 | |
| 489 | SmallVector<int, 4> dimensions; |
| 490 | if (parseDimensionListRanked(dimensions)) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 491 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 492 | |
| 493 | // Parse the element type. |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 494 | auto typeLoc = getToken().getLoc(); |
| 495 | auto *elementType = parseType(); |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 496 | if (!elementType) |
| 497 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 498 | |
Chris Lattner | c325119 | 2018-07-27 13:09:58 -0700 | [diff] [blame] | 499 | if (!isa<IntegerType>(elementType) && !isa<FloatType>(elementType) && |
| 500 | !isa<VectorType>(elementType)) |
| 501 | return (emitError(typeLoc, "invalid memref element type"), nullptr); |
| 502 | |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 503 | // Parse semi-affine-map-composition. |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 504 | SmallVector<AffineMap *, 2> affineMapComposition; |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 505 | unsigned memorySpace = 0; |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 506 | bool parsedMemorySpace = false; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 507 | |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 508 | auto parseElt = [&]() -> ParseResult { |
| 509 | if (getToken().is(Token::integer)) { |
| 510 | // Parse memory space. |
| 511 | if (parsedMemorySpace) |
| 512 | return emitError("multiple memory spaces specified in memref type"); |
| 513 | auto v = getToken().getUnsignedIntegerValue(); |
| 514 | if (!v.hasValue()) |
| 515 | return emitError("invalid memory space in memref type"); |
| 516 | memorySpace = v.getValue(); |
| 517 | consumeToken(Token::integer); |
| 518 | parsedMemorySpace = true; |
| 519 | } else { |
| 520 | // Parse affine map. |
| 521 | if (parsedMemorySpace) |
| 522 | return emitError("affine map after memory space in memref type"); |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 523 | auto *affineMap = parseAffineMapReference(); |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 524 | if (affineMap == nullptr) |
| 525 | return ParseFailure; |
| 526 | affineMapComposition.push_back(affineMap); |
| 527 | } |
| 528 | return ParseSuccess; |
| 529 | }; |
| 530 | |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 531 | // Parse a list of mappings and address space if present. |
| 532 | if (consumeIf(Token::comma)) { |
| 533 | // Parse comma separated list of affine maps, followed by memory space. |
| 534 | if (parseCommaSeparatedListUntil(Token::greater, parseElt, |
| 535 | /*allowEmptyList=*/false)) { |
| 536 | return nullptr; |
| 537 | } |
| 538 | } else { |
| 539 | if (parseToken(Token::greater, "expected ',' or '>' in memref type")) |
| 540 | return nullptr; |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 541 | } |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 542 | |
| 543 | return MemRefType::get(dimensions, elementType, affineMapComposition, |
| 544 | memorySpace); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 545 | } |
| 546 | |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 547 | /// Parse a function type. |
| 548 | /// |
| 549 | /// function-type ::= type-list-parens `->` type-list |
| 550 | /// |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 551 | Type *Parser::parseFunctionType() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 552 | assert(getToken().is(Token::l_paren)); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 553 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 554 | SmallVector<Type *, 4> arguments, results; |
| 555 | if (parseTypeList(arguments) || |
| 556 | parseToken(Token::arrow, "expected '->' in function type") || |
| 557 | parseTypeList(results)) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 558 | return nullptr; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 559 | |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 560 | return builder.getFunctionType(arguments, results); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 561 | } |
| 562 | |
Chris Lattner | 1604e47 | 2018-07-23 08:42:19 -0700 | [diff] [blame] | 563 | /// Parse a list of types without an enclosing parenthesis. The list must have |
| 564 | /// at least one member. |
| 565 | /// |
| 566 | /// type-list-no-parens ::= type (`,` type)* |
| 567 | /// |
| 568 | ParseResult Parser::parseTypeListNoParens(SmallVectorImpl<Type *> &elements) { |
| 569 | auto parseElt = [&]() -> ParseResult { |
| 570 | auto elt = parseType(); |
| 571 | elements.push_back(elt); |
| 572 | return elt ? ParseSuccess : ParseFailure; |
| 573 | }; |
| 574 | |
| 575 | return parseCommaSeparatedList(parseElt); |
| 576 | } |
| 577 | |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 578 | /// Parse a "type list", which is a singular type, or a parenthesized list of |
| 579 | /// types. |
| 580 | /// |
| 581 | /// type-list ::= type-list-parens | type |
| 582 | /// type-list-parens ::= `(` `)` |
Chris Lattner | 1604e47 | 2018-07-23 08:42:19 -0700 | [diff] [blame] | 583 | /// | `(` type-list-no-parens `)` |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 584 | /// |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 585 | ParseResult Parser::parseTypeList(SmallVectorImpl<Type *> &elements) { |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 586 | auto parseElt = [&]() -> ParseResult { |
| 587 | auto elt = parseType(); |
| 588 | elements.push_back(elt); |
| 589 | return elt ? ParseSuccess : ParseFailure; |
| 590 | }; |
| 591 | |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 592 | // If there is no parens, then it must be a singular type. |
| 593 | if (!consumeIf(Token::l_paren)) |
Chris Lattner | f7e2273 | 2018-06-22 22:03:48 -0700 | [diff] [blame] | 594 | return parseElt(); |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 595 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 596 | if (parseCommaSeparatedListUntil(Token::r_paren, parseElt)) |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 597 | return ParseFailure; |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 598 | |
Chris Lattner | bb8fafc | 2018-06-22 15:52:02 -0700 | [diff] [blame] | 599 | return ParseSuccess; |
| 600 | } |
| 601 | |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 602 | //===----------------------------------------------------------------------===// |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 603 | // Attribute parsing. |
| 604 | //===----------------------------------------------------------------------===// |
| 605 | |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 606 | /// Given a parsed reference to a function name like @foo and a type that it |
| 607 | /// corresponds to, resolve it to a concrete function object (possibly |
| 608 | /// synthesizing a forward reference) or emit an error and return null on |
| 609 | /// failure. |
| 610 | Function *Parser::resolveFunctionReference(StringRef nameStr, SMLoc nameLoc, |
| 611 | FunctionType *type) { |
| 612 | Identifier name = builder.getIdentifier(nameStr.drop_front()); |
| 613 | |
| 614 | // See if the function has already been defined in the module. |
| 615 | Function *function = getModule()->getNamedFunction(name); |
| 616 | |
| 617 | // If not, get or create a forward reference to one. |
| 618 | if (!function) { |
| 619 | auto &entry = state.functionForwardRefs[name]; |
| 620 | if (!entry.first) { |
| 621 | entry.first = new ExtFunction(name, type); |
| 622 | entry.second = nameLoc; |
| 623 | } |
| 624 | function = entry.first; |
| 625 | } |
| 626 | |
| 627 | if (function->getType() != type) |
| 628 | return (emitError(nameLoc, "reference to function with mismatched type"), |
| 629 | nullptr); |
| 630 | return function; |
| 631 | } |
| 632 | |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 633 | /// Attribute parsing. |
| 634 | /// |
| 635 | /// attribute-value ::= bool-literal |
| 636 | /// | integer-literal |
| 637 | /// | float-literal |
| 638 | /// | string-literal |
James Molloy | f0d2f44 | 2018-08-03 01:54:46 -0700 | [diff] [blame] | 639 | /// | type |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 640 | /// | `[` (attribute-value (`,` attribute-value)*)? `]` |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 641 | /// | function-id `:` function-type |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 642 | /// |
| 643 | Attribute *Parser::parseAttribute() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 644 | switch (getToken().getKind()) { |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 645 | case Token::kw_true: |
| 646 | consumeToken(Token::kw_true); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 647 | return builder.getBoolAttr(true); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 648 | case Token::kw_false: |
| 649 | consumeToken(Token::kw_false); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 650 | return builder.getBoolAttr(false); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 651 | |
Jacques Pienaar | 8449109 | 2018-07-31 17:15:15 -0700 | [diff] [blame] | 652 | case Token::floatliteral: { |
| 653 | auto val = getToken().getFloatingPointValue(); |
| 654 | if (!val.hasValue()) |
| 655 | return (emitError("floating point value too large for attribute"), |
| 656 | nullptr); |
| 657 | consumeToken(Token::floatliteral); |
| 658 | return builder.getFloatAttr(val.getValue()); |
| 659 | } |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 660 | case Token::integer: { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 661 | auto val = getToken().getUInt64IntegerValue(); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 662 | if (!val.hasValue() || (int64_t)val.getValue() < 0) |
| 663 | return (emitError("integer too large for attribute"), nullptr); |
| 664 | consumeToken(Token::integer); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 665 | return builder.getIntegerAttr((int64_t)val.getValue()); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | case Token::minus: { |
| 669 | consumeToken(Token::minus); |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 670 | if (getToken().is(Token::integer)) { |
| 671 | auto val = getToken().getUInt64IntegerValue(); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 672 | if (!val.hasValue() || (int64_t)-val.getValue() >= 0) |
| 673 | return (emitError("integer too large for attribute"), nullptr); |
| 674 | consumeToken(Token::integer); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 675 | return builder.getIntegerAttr((int64_t)-val.getValue()); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 676 | } |
Jacques Pienaar | 8449109 | 2018-07-31 17:15:15 -0700 | [diff] [blame] | 677 | if (getToken().is(Token::floatliteral)) { |
| 678 | auto val = getToken().getFloatingPointValue(); |
| 679 | if (!val.hasValue()) |
| 680 | return (emitError("floating point value too large for attribute"), |
| 681 | nullptr); |
| 682 | consumeToken(Token::floatliteral); |
| 683 | return builder.getFloatAttr(-val.getValue()); |
| 684 | } |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 685 | |
| 686 | return (emitError("expected constant integer or floating point value"), |
| 687 | nullptr); |
| 688 | } |
| 689 | |
| 690 | case Token::string: { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 691 | auto val = getToken().getStringValue(); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 692 | consumeToken(Token::string); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 693 | return builder.getStringAttr(val); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 694 | } |
| 695 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 696 | case Token::l_square: { |
| 697 | consumeToken(Token::l_square); |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 698 | SmallVector<Attribute *, 4> elements; |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 699 | |
| 700 | auto parseElt = [&]() -> ParseResult { |
| 701 | elements.push_back(parseAttribute()); |
| 702 | return elements.back() ? ParseSuccess : ParseFailure; |
| 703 | }; |
| 704 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 705 | if (parseCommaSeparatedListUntil(Token::r_square, parseElt)) |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 706 | return nullptr; |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 707 | return builder.getArrayAttr(elements); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 708 | } |
James Molloy | f0d2f44 | 2018-08-03 01:54:46 -0700 | [diff] [blame] | 709 | case Token::hash_identifier: |
| 710 | case Token::l_paren: { |
MLIR Team | b61885d | 2018-07-18 16:29:21 -0700 | [diff] [blame] | 711 | // Try to parse affine map reference. |
James Molloy | f0d2f44 | 2018-08-03 01:54:46 -0700 | [diff] [blame] | 712 | if (auto *affineMap = parseAffineMapReference()) |
MLIR Team | b61885d | 2018-07-18 16:29:21 -0700 | [diff] [blame] | 713 | return builder.getAffineMapAttr(affineMap); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 714 | return (emitError("expected constant attribute value"), nullptr); |
| 715 | } |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 716 | |
| 717 | case Token::at_identifier: { |
| 718 | auto nameLoc = getToken().getLoc(); |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 719 | auto nameStr = getTokenSpelling(); |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 720 | consumeToken(Token::at_identifier); |
| 721 | |
| 722 | if (parseToken(Token::colon, "expected ':' and function type")) |
| 723 | return nullptr; |
| 724 | auto typeLoc = getToken().getLoc(); |
| 725 | Type *type = parseType(); |
| 726 | if (!type) |
| 727 | return nullptr; |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 728 | auto *fnType = dyn_cast<FunctionType>(type); |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 729 | if (!fnType) |
| 730 | return (emitError(typeLoc, "expected function type"), nullptr); |
| 731 | |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 732 | auto *function = resolveFunctionReference(nameStr, nameLoc, fnType); |
| 733 | return function ? builder.getFunctionAttr(function) : nullptr; |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 734 | } |
| 735 | |
James Molloy | f0d2f44 | 2018-08-03 01:54:46 -0700 | [diff] [blame] | 736 | default: { |
| 737 | if (Type *type = parseType()) |
| 738 | return builder.getTypeAttr(type); |
| 739 | return nullptr; |
| 740 | } |
| 741 | } |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 742 | } |
| 743 | |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 744 | /// Attribute dictionary. |
| 745 | /// |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 746 | /// attribute-dict ::= `{` `}` |
| 747 | /// | `{` attribute-entry (`,` attribute-entry)* `}` |
| 748 | /// attribute-entry ::= bare-id `:` attribute-value |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 749 | /// |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 750 | ParseResult |
| 751 | Parser::parseAttributeDict(SmallVectorImpl<NamedAttribute> &attributes) { |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 752 | consumeToken(Token::l_brace); |
| 753 | |
| 754 | auto parseElt = [&]() -> ParseResult { |
| 755 | // We allow keywords as attribute names. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 756 | if (getToken().isNot(Token::bare_identifier, Token::inttype) && |
| 757 | !getToken().isKeyword()) |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 758 | return emitError("expected attribute name"); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 759 | auto nameId = builder.getIdentifier(getTokenSpelling()); |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 760 | consumeToken(); |
| 761 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 762 | if (parseToken(Token::colon, "expected ':' in attribute list")) |
| 763 | return ParseFailure; |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 764 | |
| 765 | auto attr = parseAttribute(); |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 766 | if (!attr) |
| 767 | return ParseFailure; |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 768 | |
| 769 | attributes.push_back({nameId, attr}); |
| 770 | return ParseSuccess; |
| 771 | }; |
| 772 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 773 | if (parseCommaSeparatedListUntil(Token::r_brace, parseElt)) |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 774 | return ParseFailure; |
| 775 | |
| 776 | return ParseSuccess; |
| 777 | } |
| 778 | |
| 779 | //===----------------------------------------------------------------------===// |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 780 | // Polyhedral structures. |
| 781 | //===----------------------------------------------------------------------===// |
| 782 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 783 | /// Lower precedence ops (all at the same precedence level). LNoOp is false in |
| 784 | /// the boolean sense. |
| 785 | enum AffineLowPrecOp { |
| 786 | /// Null value. |
| 787 | LNoOp, |
| 788 | Add, |
| 789 | Sub |
| 790 | }; |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 791 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 792 | /// Higher precedence ops - all at the same precedence level. HNoOp is false in |
| 793 | /// the boolean sense. |
| 794 | enum AffineHighPrecOp { |
| 795 | /// Null value. |
| 796 | HNoOp, |
| 797 | Mul, |
| 798 | FloorDiv, |
| 799 | CeilDiv, |
| 800 | Mod |
| 801 | }; |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 802 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 803 | namespace { |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 804 | /// This is a specialized parser for affine structures (affine maps, affine |
| 805 | /// expressions, and integer sets), maintaining the state transient to their |
| 806 | /// bodies. |
| 807 | class AffineParser : public Parser { |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 808 | public: |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 809 | explicit AffineParser(ParserState &state) : Parser(state) {} |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 810 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 811 | AffineMap *parseAffineMapInline(); |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 812 | IntegerSet *parseIntegerSetInline(); |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 813 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 814 | private: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 815 | // Binary affine op parsing. |
| 816 | AffineLowPrecOp consumeIfLowPrecOp(); |
| 817 | AffineHighPrecOp consumeIfHighPrecOp(); |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 818 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 819 | // Identifier lists for polyhedral structures. |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 820 | ParseResult parseDimIdList(unsigned &numDims); |
| 821 | ParseResult parseSymbolIdList(unsigned &numSymbols); |
| 822 | ParseResult parseIdentifierDefinition(AffineExpr *idExpr); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 823 | |
| 824 | AffineExpr *parseAffineExpr(); |
| 825 | AffineExpr *parseParentheticalExpr(); |
| 826 | AffineExpr *parseNegateExpression(AffineExpr *lhs); |
| 827 | AffineExpr *parseIntegerExpr(); |
| 828 | AffineExpr *parseBareIdExpr(); |
| 829 | |
| 830 | AffineExpr *getBinaryAffineOpExpr(AffineHighPrecOp op, AffineExpr *lhs, |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 831 | AffineExpr *rhs, SMLoc opLoc); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 832 | AffineExpr *getBinaryAffineOpExpr(AffineLowPrecOp op, AffineExpr *lhs, |
| 833 | AffineExpr *rhs); |
| 834 | AffineExpr *parseAffineOperandExpr(AffineExpr *lhs); |
| 835 | AffineExpr *parseAffineLowPrecOpExpr(AffineExpr *llhs, |
| 836 | AffineLowPrecOp llhsOp); |
| 837 | AffineExpr *parseAffineHighPrecOpExpr(AffineExpr *llhs, |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 838 | AffineHighPrecOp llhsOp, |
| 839 | SMLoc llhsOpLoc); |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 840 | AffineExpr *parseAffineConstraint(bool *isEq); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 841 | |
| 842 | private: |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 843 | SmallVector<std::pair<StringRef, AffineExpr *>, 4> dimsAndSymbols; |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 844 | }; |
| 845 | } // end anonymous namespace |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 846 | |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 847 | /// Create an affine binary high precedence op expression (mul's, div's, mod). |
| 848 | /// opLoc is the location of the op token to be used to report errors |
| 849 | /// for non-conforming expressions. |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 850 | AffineExpr *AffineParser::getBinaryAffineOpExpr(AffineHighPrecOp op, |
| 851 | AffineExpr *lhs, |
| 852 | AffineExpr *rhs, SMLoc opLoc) { |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 853 | // TODO: make the error location info accurate. |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 854 | switch (op) { |
| 855 | case Mul: |
Uday Bondhugula | cbe4cca | 2018-07-19 13:07:16 -0700 | [diff] [blame] | 856 | if (!lhs->isSymbolicOrConstant() && !rhs->isSymbolicOrConstant()) { |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 857 | emitError(opLoc, "non-affine expression: at least one of the multiply " |
| 858 | "operands has to be either a constant or symbolic"); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 859 | return nullptr; |
| 860 | } |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 861 | return builder.getMulExpr(lhs, rhs); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 862 | case FloorDiv: |
Uday Bondhugula | cbe4cca | 2018-07-19 13:07:16 -0700 | [diff] [blame] | 863 | if (!rhs->isSymbolicOrConstant()) { |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 864 | emitError(opLoc, "non-affine expression: right operand of floordiv " |
| 865 | "has to be either a constant or symbolic"); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 866 | return nullptr; |
| 867 | } |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 868 | return builder.getFloorDivExpr(lhs, rhs); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 869 | case CeilDiv: |
Uday Bondhugula | cbe4cca | 2018-07-19 13:07:16 -0700 | [diff] [blame] | 870 | if (!rhs->isSymbolicOrConstant()) { |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 871 | emitError(opLoc, "non-affine expression: right operand of ceildiv " |
| 872 | "has to be either a constant or symbolic"); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 873 | return nullptr; |
| 874 | } |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 875 | return builder.getCeilDivExpr(lhs, rhs); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 876 | case Mod: |
Uday Bondhugula | cbe4cca | 2018-07-19 13:07:16 -0700 | [diff] [blame] | 877 | if (!rhs->isSymbolicOrConstant()) { |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 878 | emitError(opLoc, "non-affine expression: right operand of mod " |
| 879 | "has to be either a constant or symbolic"); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 880 | return nullptr; |
| 881 | } |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 882 | return builder.getModExpr(lhs, rhs); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 883 | case HNoOp: |
| 884 | llvm_unreachable("can't create affine expression for null high prec op"); |
| 885 | return nullptr; |
| 886 | } |
| 887 | } |
| 888 | |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 889 | /// Create an affine binary low precedence op expression (add, sub). |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 890 | AffineExpr *AffineParser::getBinaryAffineOpExpr(AffineLowPrecOp op, |
| 891 | AffineExpr *lhs, |
| 892 | AffineExpr *rhs) { |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 893 | switch (op) { |
| 894 | case AffineLowPrecOp::Add: |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 895 | return builder.getAddExpr(lhs, rhs); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 896 | case AffineLowPrecOp::Sub: |
Uday Bondhugula | c1faf66 | 2018-07-19 14:08:50 -0700 | [diff] [blame] | 897 | return builder.getAddExpr( |
| 898 | lhs, builder.getMulExpr(rhs, builder.getConstantExpr(-1))); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 899 | case AffineLowPrecOp::LNoOp: |
| 900 | llvm_unreachable("can't create affine expression for null low prec op"); |
| 901 | return nullptr; |
| 902 | } |
| 903 | } |
| 904 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 905 | /// Consume this token if it is a lower precedence affine op (there are only two |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 906 | /// precedence levels). |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 907 | AffineLowPrecOp AffineParser::consumeIfLowPrecOp() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 908 | switch (getToken().getKind()) { |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 909 | case Token::plus: |
| 910 | consumeToken(Token::plus); |
| 911 | return AffineLowPrecOp::Add; |
| 912 | case Token::minus: |
| 913 | consumeToken(Token::minus); |
| 914 | return AffineLowPrecOp::Sub; |
| 915 | default: |
| 916 | return AffineLowPrecOp::LNoOp; |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | /// Consume this token if it is a higher precedence affine op (there are only |
| 921 | /// two precedence levels) |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 922 | AffineHighPrecOp AffineParser::consumeIfHighPrecOp() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 923 | switch (getToken().getKind()) { |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 924 | case Token::star: |
| 925 | consumeToken(Token::star); |
| 926 | return Mul; |
| 927 | case Token::kw_floordiv: |
| 928 | consumeToken(Token::kw_floordiv); |
| 929 | return FloorDiv; |
| 930 | case Token::kw_ceildiv: |
| 931 | consumeToken(Token::kw_ceildiv); |
| 932 | return CeilDiv; |
| 933 | case Token::kw_mod: |
| 934 | consumeToken(Token::kw_mod); |
| 935 | return Mod; |
| 936 | default: |
| 937 | return HNoOp; |
| 938 | } |
| 939 | } |
| 940 | |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 941 | /// Parse a high precedence op expression list: mul, div, and mod are high |
| 942 | /// precedence binary ops, i.e., parse a |
| 943 | /// expr_1 op_1 expr_2 op_2 ... expr_n |
| 944 | /// where op_1, op_2 are all a AffineHighPrecOp (mul, div, mod). |
| 945 | /// All affine binary ops are left associative. |
| 946 | /// Given llhs, returns (llhs llhsOp lhs) op rhs, or (lhs op rhs) if llhs is |
| 947 | /// null. If no rhs can be found, returns (llhs llhsOp lhs) or lhs if llhs is |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 948 | /// null. llhsOpLoc is the location of the llhsOp token that will be used to |
| 949 | /// report an error for non-conforming expressions. |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 950 | AffineExpr *AffineParser::parseAffineHighPrecOpExpr(AffineExpr *llhs, |
| 951 | AffineHighPrecOp llhsOp, |
| 952 | SMLoc llhsOpLoc) { |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 953 | AffineExpr *lhs = parseAffineOperandExpr(llhs); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 954 | if (!lhs) |
| 955 | return nullptr; |
| 956 | |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 957 | // Found an LHS. Parse the remaining expression. |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 958 | auto opLoc = getToken().getLoc(); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 959 | if (AffineHighPrecOp op = consumeIfHighPrecOp()) { |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 960 | if (llhs) { |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 961 | AffineExpr *expr = getBinaryAffineOpExpr(llhsOp, llhs, lhs, opLoc); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 962 | if (!expr) |
| 963 | return nullptr; |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 964 | return parseAffineHighPrecOpExpr(expr, op, opLoc); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 965 | } |
| 966 | // No LLHS, get RHS |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 967 | return parseAffineHighPrecOpExpr(lhs, op, opLoc); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 968 | } |
| 969 | |
| 970 | // This is the last operand in this expression. |
| 971 | if (llhs) |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 972 | return getBinaryAffineOpExpr(llhsOp, llhs, lhs, llhsOpLoc); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 973 | |
| 974 | // No llhs, 'lhs' itself is the expression. |
| 975 | return lhs; |
| 976 | } |
| 977 | |
| 978 | /// Parse an affine expression inside parentheses. |
| 979 | /// |
| 980 | /// affine-expr ::= `(` affine-expr `)` |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 981 | AffineExpr *AffineParser::parseParentheticalExpr() { |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 982 | if (parseToken(Token::l_paren, "expected '('")) |
| 983 | return nullptr; |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 984 | if (getToken().is(Token::r_paren)) |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 985 | return (emitError("no expression inside parentheses"), nullptr); |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 986 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 987 | auto *expr = parseAffineExpr(); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 988 | if (!expr) |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 989 | return nullptr; |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 990 | if (parseToken(Token::r_paren, "expected ')'")) |
| 991 | return nullptr; |
| 992 | |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 993 | return expr; |
| 994 | } |
| 995 | |
| 996 | /// Parse the negation expression. |
| 997 | /// |
| 998 | /// affine-expr ::= `-` affine-expr |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 999 | AffineExpr *AffineParser::parseNegateExpression(AffineExpr *lhs) { |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1000 | if (parseToken(Token::minus, "expected '-'")) |
| 1001 | return nullptr; |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1002 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1003 | AffineExpr *operand = parseAffineOperandExpr(lhs); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1004 | // Since negation has the highest precedence of all ops (including high |
| 1005 | // precedence ops) but lower than parentheses, we are only going to use |
| 1006 | // parseAffineOperandExpr instead of parseAffineExpr here. |
| 1007 | if (!operand) |
| 1008 | // Extra error message although parseAffineOperandExpr would have |
| 1009 | // complained. Leads to a better diagnostic. |
| 1010 | return (emitError("missing operand of negation"), nullptr); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 1011 | auto *minusOne = builder.getConstantExpr(-1); |
| 1012 | return builder.getMulExpr(minusOne, operand); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | /// Parse a bare id that may appear in an affine expression. |
| 1016 | /// |
| 1017 | /// affine-expr ::= bare-id |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1018 | AffineExpr *AffineParser::parseBareIdExpr() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1019 | if (getToken().isNot(Token::bare_identifier)) |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1020 | return (emitError("expected bare identifier"), nullptr); |
| 1021 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1022 | StringRef sRef = getTokenSpelling(); |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1023 | for (auto entry : dimsAndSymbols) { |
Chris Lattner | a8e4767 | 2018-07-25 14:08:16 -0700 | [diff] [blame] | 1024 | if (entry.first == sRef) { |
| 1025 | consumeToken(Token::bare_identifier); |
| 1026 | return entry.second; |
| 1027 | } |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1028 | } |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1029 | |
| 1030 | return (emitError("use of undeclared identifier"), nullptr); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1031 | } |
| 1032 | |
| 1033 | /// Parse a positive integral constant appearing in an affine expression. |
| 1034 | /// |
| 1035 | /// affine-expr ::= integer-literal |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1036 | AffineExpr *AffineParser::parseIntegerExpr() { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1037 | auto val = getToken().getUInt64IntegerValue(); |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 1038 | if (!val.hasValue() || (int64_t)val.getValue() < 0) |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1039 | return (emitError("constant too large for affineint"), nullptr); |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 1040 | |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1041 | consumeToken(Token::integer); |
Chris Lattner | 1ac20cb | 2018-07-10 10:59:53 -0700 | [diff] [blame] | 1042 | return builder.getConstantExpr((int64_t)val.getValue()); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1043 | } |
| 1044 | |
| 1045 | /// Parses an expression that can be a valid operand of an affine expression. |
Uday Bondhugula | 7634520 | 2018-07-09 13:47:52 -0700 | [diff] [blame] | 1046 | /// lhs: if non-null, lhs is an affine expression that is the lhs of a binary |
| 1047 | /// operator, the rhs of which is being parsed. This is used to determine |
| 1048 | /// whether an error should be emitted for a missing right operand. |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1049 | // Eg: for an expression without parentheses (like i + j + k + l), each |
| 1050 | // of the four identifiers is an operand. For i + j*k + l, j*k is not an |
| 1051 | // operand expression, it's an op expression and will be parsed via |
| 1052 | // parseAffineHighPrecOpExpression(). However, for i + (j*k) + -l, (j*k) and -l |
| 1053 | // are valid operands that will be parsed by this function. |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1054 | AffineExpr *AffineParser::parseAffineOperandExpr(AffineExpr *lhs) { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1055 | switch (getToken().getKind()) { |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1056 | case Token::bare_identifier: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1057 | return parseBareIdExpr(); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1058 | case Token::integer: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1059 | return parseIntegerExpr(); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1060 | case Token::l_paren: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1061 | return parseParentheticalExpr(); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1062 | case Token::minus: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1063 | return parseNegateExpression(lhs); |
Uday Bondhugula | 7634520 | 2018-07-09 13:47:52 -0700 | [diff] [blame] | 1064 | case Token::kw_ceildiv: |
| 1065 | case Token::kw_floordiv: |
| 1066 | case Token::kw_mod: |
| 1067 | case Token::plus: |
| 1068 | case Token::star: |
| 1069 | if (lhs) |
| 1070 | emitError("missing right operand of binary operator"); |
| 1071 | else |
| 1072 | emitError("missing left operand of binary operator"); |
| 1073 | return nullptr; |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1074 | default: |
| 1075 | if (lhs) |
Uday Bondhugula | 7634520 | 2018-07-09 13:47:52 -0700 | [diff] [blame] | 1076 | emitError("missing right operand of binary operator"); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1077 | else |
| 1078 | emitError("expected affine expression"); |
| 1079 | return nullptr; |
| 1080 | } |
| 1081 | } |
| 1082 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1083 | /// Parse affine expressions that are bare-id's, integer constants, |
| 1084 | /// parenthetical affine expressions, and affine op expressions that are a |
| 1085 | /// composition of those. |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1086 | /// |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1087 | /// All binary op's associate from left to right. |
| 1088 | /// |
| 1089 | /// {add, sub} have lower precedence than {mul, div, and mod}. |
| 1090 | /// |
Uday Bondhugula | 7634520 | 2018-07-09 13:47:52 -0700 | [diff] [blame] | 1091 | /// Add, sub'are themselves at the same precedence level. Mul, floordiv, |
| 1092 | /// ceildiv, and mod are at the same higher precedence level. Negation has |
| 1093 | /// higher precedence than any binary op. |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1094 | /// |
| 1095 | /// llhs: the affine expression appearing on the left of the one being parsed. |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1096 | /// This function will return ((llhs llhsOp lhs) op rhs) if llhs is non null, |
| 1097 | /// and lhs op rhs otherwise; if there is no rhs, llhs llhsOp lhs is returned if |
| 1098 | /// llhs is non-null; otherwise lhs is returned. This is to deal with left |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1099 | /// associativity. |
| 1100 | /// |
| 1101 | /// Eg: when the expression is e1 + e2*e3 + e4, with e1 as llhs, this function |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1102 | /// will return the affine expr equivalent of (e1 + (e2*e3)) + e4, where (e2*e3) |
| 1103 | /// will be parsed using parseAffineHighPrecOpExpr(). |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1104 | AffineExpr *AffineParser::parseAffineLowPrecOpExpr(AffineExpr *llhs, |
| 1105 | AffineLowPrecOp llhsOp) { |
Uday Bondhugula | 7634520 | 2018-07-09 13:47:52 -0700 | [diff] [blame] | 1106 | AffineExpr *lhs; |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1107 | if (!(lhs = parseAffineOperandExpr(llhs))) |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1108 | return nullptr; |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1109 | |
| 1110 | // Found an LHS. Deal with the ops. |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1111 | if (AffineLowPrecOp lOp = consumeIfLowPrecOp()) { |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1112 | if (llhs) { |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 1113 | AffineExpr *sum = getBinaryAffineOpExpr(llhsOp, llhs, lhs); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1114 | return parseAffineLowPrecOpExpr(sum, lOp); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1115 | } |
| 1116 | // No LLHS, get RHS and form the expression. |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1117 | return parseAffineLowPrecOpExpr(lhs, lOp); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1118 | } |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 1119 | auto opLoc = getToken().getLoc(); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1120 | if (AffineHighPrecOp hOp = consumeIfHighPrecOp()) { |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1121 | // We have a higher precedence op here. Get the rhs operand for the llhs |
| 1122 | // through parseAffineHighPrecOpExpr. |
Uday Bondhugula | 851b8fd | 2018-07-20 14:57:21 -0700 | [diff] [blame] | 1123 | AffineExpr *highRes = parseAffineHighPrecOpExpr(lhs, hOp, opLoc); |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1124 | if (!highRes) |
| 1125 | return nullptr; |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1126 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1127 | // If llhs is null, the product forms the first operand of the yet to be |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1128 | // found expression. If non-null, the op to associate with llhs is llhsOp. |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1129 | AffineExpr *expr = |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 1130 | llhs ? getBinaryAffineOpExpr(llhsOp, llhs, highRes) : highRes; |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1131 | |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1132 | // Recurse for subsequent low prec op's after the affine high prec op |
| 1133 | // expression. |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1134 | if (AffineLowPrecOp nextOp = consumeIfLowPrecOp()) |
| 1135 | return parseAffineLowPrecOpExpr(expr, nextOp); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1136 | return expr; |
| 1137 | } |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1138 | // Last operand in the expression list. |
| 1139 | if (llhs) |
| 1140 | return getBinaryAffineOpExpr(llhsOp, llhs, lhs); |
| 1141 | // No llhs, 'lhs' itself is the expression. |
| 1142 | return lhs; |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1143 | } |
| 1144 | |
| 1145 | /// Parse an affine expression. |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1146 | /// affine-expr ::= `(` affine-expr `)` |
| 1147 | /// | `-` affine-expr |
| 1148 | /// | affine-expr `+` affine-expr |
| 1149 | /// | affine-expr `-` affine-expr |
| 1150 | /// | affine-expr `*` affine-expr |
| 1151 | /// | affine-expr `floordiv` affine-expr |
| 1152 | /// | affine-expr `ceildiv` affine-expr |
| 1153 | /// | affine-expr `mod` affine-expr |
| 1154 | /// | bare-id |
| 1155 | /// | integer-literal |
| 1156 | /// |
| 1157 | /// Additional conditions are checked depending on the production. For eg., one |
| 1158 | /// of the operands for `*` has to be either constant/symbolic; the second |
| 1159 | /// operand for floordiv, ceildiv, and mod has to be a positive integer. |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1160 | AffineExpr *AffineParser::parseAffineExpr() { |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1161 | return parseAffineLowPrecOpExpr(nullptr, AffineLowPrecOp::LNoOp); |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1162 | } |
| 1163 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1164 | /// Parse a dim or symbol from the lists appearing before the actual expressions |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1165 | /// of the affine map. Update our state to store the dimensional/symbolic |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1166 | /// identifier. |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1167 | ParseResult AffineParser::parseIdentifierDefinition(AffineExpr *idExpr) { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1168 | if (getToken().isNot(Token::bare_identifier)) |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1169 | return emitError("expected bare identifier"); |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1170 | |
| 1171 | auto name = getTokenSpelling(); |
| 1172 | for (auto entry : dimsAndSymbols) { |
| 1173 | if (entry.first == name) |
| 1174 | return emitError("redefinition of identifier '" + Twine(name) + "'"); |
| 1175 | } |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1176 | consumeToken(Token::bare_identifier); |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1177 | |
| 1178 | dimsAndSymbols.push_back({name, idExpr}); |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1179 | return ParseSuccess; |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1180 | } |
| 1181 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1182 | /// Parse the list of symbolic identifiers to an affine map. |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1183 | ParseResult AffineParser::parseSymbolIdList(unsigned &numSymbols) { |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1184 | consumeToken(Token::l_square); |
| 1185 | auto parseElt = [&]() -> ParseResult { |
| 1186 | auto *symbol = AffineSymbolExpr::get(numSymbols++, getContext()); |
| 1187 | return parseIdentifierDefinition(symbol); |
| 1188 | }; |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1189 | return parseCommaSeparatedListUntil(Token::r_square, parseElt); |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1190 | } |
| 1191 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1192 | /// Parse the list of dimensional identifiers to an affine map. |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1193 | ParseResult AffineParser::parseDimIdList(unsigned &numDims) { |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1194 | if (parseToken(Token::l_paren, |
| 1195 | "expected '(' at start of dimensional identifiers list")) |
| 1196 | return ParseFailure; |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1197 | |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1198 | auto parseElt = [&]() -> ParseResult { |
| 1199 | auto *dimension = AffineDimExpr::get(numDims++, getContext()); |
| 1200 | return parseIdentifierDefinition(dimension); |
| 1201 | }; |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1202 | return parseCommaSeparatedListUntil(Token::r_paren, parseElt); |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1203 | } |
| 1204 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1205 | /// Parse an affine map definition. |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1206 | /// |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1207 | /// affine-map-inline ::= dim-and-symbol-id-lists `->` multi-dim-affine-expr |
| 1208 | /// (`size` `(` dim-size (`,` dim-size)* `)`)? |
| 1209 | /// dim-size ::= affine-expr | `min` `(` affine-expr ( `,` affine-expr)+ `)` |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1210 | /// |
Uday Bondhugula | 3934d4d | 2018-07-09 09:00:25 -0700 | [diff] [blame] | 1211 | /// multi-dim-affine-expr ::= `(` affine-expr (`,` affine-expr)* `) |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1212 | AffineMap *AffineParser::parseAffineMapInline() { |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1213 | unsigned numDims = 0, numSymbols = 0; |
| 1214 | |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1215 | // List of dimensional identifiers. |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1216 | if (parseDimIdList(numDims)) |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 1217 | return nullptr; |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1218 | |
| 1219 | // Symbols are optional. |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1220 | if (getToken().is(Token::l_square)) { |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1221 | if (parseSymbolIdList(numSymbols)) |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 1222 | return nullptr; |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1223 | } |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1224 | |
| 1225 | if (parseToken(Token::arrow, "expected '->' or '['") || |
| 1226 | parseToken(Token::l_paren, "expected '(' at start of affine map range")) |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 1227 | return nullptr; |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1228 | |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1229 | SmallVector<AffineExpr *, 4> exprs; |
| 1230 | auto parseElt = [&]() -> ParseResult { |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1231 | auto *elt = parseAffineExpr(); |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1232 | ParseResult res = elt ? ParseSuccess : ParseFailure; |
| 1233 | exprs.push_back(elt); |
| 1234 | return res; |
| 1235 | }; |
| 1236 | |
| 1237 | // Parse a multi-dimensional affine expression (a comma-separated list of 1-d |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1238 | // affine expressions); the list cannot be empty. |
| 1239 | // Grammar: multi-dim-affine-expr ::= `(` affine-expr (`,` affine-expr)* `) |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1240 | if (parseCommaSeparatedListUntil(Token::r_paren, parseElt, false)) |
Chris Lattner | 7121b80 | 2018-07-04 20:45:39 -0700 | [diff] [blame] | 1241 | return nullptr; |
Uday Bondhugula | faf37dd | 2018-06-29 18:09:29 -0700 | [diff] [blame] | 1242 | |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1243 | // Parse optional range sizes. |
Uday Bondhugula | 1e500b4 | 2018-07-12 18:04:04 -0700 | [diff] [blame] | 1244 | // range-sizes ::= (`size` `(` dim-size (`,` dim-size)* `)`)? |
| 1245 | // dim-size ::= affine-expr | `min` `(` affine-expr (`,` affine-expr)+ `)` |
| 1246 | // TODO(bondhugula): support for min of several affine expressions. |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1247 | // TODO: check if sizes are non-negative whenever they are constant. |
| 1248 | SmallVector<AffineExpr *, 4> rangeSizes; |
| 1249 | if (consumeIf(Token::kw_size)) { |
| 1250 | // Location of the l_paren token (if it exists) for error reporting later. |
| 1251 | auto loc = getToken().getLoc(); |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1252 | if (parseToken(Token::l_paren, "expected '(' at start of affine map range")) |
| 1253 | return nullptr; |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1254 | |
| 1255 | auto parseRangeSize = [&]() -> ParseResult { |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1256 | auto loc = getToken().getLoc(); |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1257 | auto *elt = parseAffineExpr(); |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1258 | if (!elt) |
| 1259 | return ParseFailure; |
| 1260 | |
| 1261 | if (!elt->isSymbolicOrConstant()) |
| 1262 | return emitError(loc, |
| 1263 | "size expressions cannot refer to dimension values"); |
| 1264 | |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1265 | rangeSizes.push_back(elt); |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1266 | return ParseSuccess; |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1267 | }; |
| 1268 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1269 | if (parseCommaSeparatedListUntil(Token::r_paren, parseRangeSize, false)) |
Uday Bondhugula | 0115dbb | 2018-07-11 21:31:07 -0700 | [diff] [blame] | 1270 | return nullptr; |
| 1271 | if (exprs.size() > rangeSizes.size()) |
| 1272 | return (emitError(loc, "fewer range sizes than range expressions"), |
| 1273 | nullptr); |
| 1274 | if (exprs.size() < rangeSizes.size()) |
| 1275 | return (emitError(loc, "more range sizes than range expressions"), |
| 1276 | nullptr); |
| 1277 | } |
| 1278 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 1279 | // Parsed a valid affine map. |
Chris Lattner | 413db6a | 2018-07-25 12:55:50 -0700 | [diff] [blame] | 1280 | return builder.getAffineMap(numDims, numSymbols, exprs, rangeSizes); |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 1281 | } |
| 1282 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1283 | AffineMap *Parser::parseAffineMapInline() { |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 1284 | return AffineParser(state).parseAffineMapInline(); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1285 | } |
| 1286 | |
MLIR Team | 718c82f | 2018-07-16 09:45:22 -0700 | [diff] [blame] | 1287 | AffineMap *Parser::parseAffineMapReference() { |
| 1288 | if (getToken().is(Token::hash_identifier)) { |
| 1289 | // Parse affine map identifier and verify that it exists. |
| 1290 | StringRef affineMapId = getTokenSpelling().drop_front(); |
| 1291 | if (getState().affineMapDefinitions.count(affineMapId) == 0) |
| 1292 | return (emitError("undefined affine map id '" + affineMapId + "'"), |
| 1293 | nullptr); |
| 1294 | consumeToken(Token::hash_identifier); |
| 1295 | return getState().affineMapDefinitions[affineMapId]; |
| 1296 | } |
| 1297 | // Try to parse inline affine map. |
| 1298 | return parseAffineMapInline(); |
| 1299 | } |
| 1300 | |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 1301 | //===----------------------------------------------------------------------===// |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1302 | // FunctionParser |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 1303 | //===----------------------------------------------------------------------===// |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 1304 | |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1305 | namespace { |
| 1306 | /// This class contains parser state that is common across CFG and ML functions, |
| 1307 | /// notably for dealing with operations and SSA values. |
| 1308 | class FunctionParser : public Parser { |
| 1309 | public: |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1310 | enum class Kind { CFGFunc, MLFunc }; |
| 1311 | |
| 1312 | Kind getKind() const { return kind; } |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1313 | |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1314 | /// After the function is finished parsing, this function checks to see if |
| 1315 | /// there are any remaining issues. |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1316 | ParseResult finalizeFunction(Function *func, SMLoc loc); |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1317 | |
| 1318 | /// This represents a use of an SSA value in the program. The first two |
| 1319 | /// entries in the tuple are the name and result number of a reference. The |
| 1320 | /// third is the location of the reference, which is used in case this ends up |
| 1321 | /// being a use of an undefined value. |
| 1322 | struct SSAUseInfo { |
| 1323 | StringRef name; // Value name, e.g. %42 or %abc |
| 1324 | unsigned number; // Number, specified with #12 |
| 1325 | SMLoc loc; // Location of first definition or use. |
| 1326 | }; |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1327 | |
| 1328 | /// Given a reference to an SSA value and its type, return a reference. This |
| 1329 | /// returns null on failure. |
| 1330 | SSAValue *resolveSSAUse(SSAUseInfo useInfo, Type *type); |
| 1331 | |
| 1332 | /// Register a definition of a value with the symbol table. |
| 1333 | ParseResult addDefinition(SSAUseInfo useInfo, SSAValue *value); |
| 1334 | |
| 1335 | // SSA parsing productions. |
| 1336 | ParseResult parseSSAUse(SSAUseInfo &result); |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1337 | ParseResult parseOptionalSSAUseList(SmallVectorImpl<SSAUseInfo> &results); |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1338 | |
| 1339 | template <typename ResultType> |
| 1340 | ResultType parseSSADefOrUseAndType( |
| 1341 | const std::function<ResultType(SSAUseInfo, Type *)> &action); |
| 1342 | |
| 1343 | SSAValue *parseSSAUseAndType() { |
| 1344 | return parseSSADefOrUseAndType<SSAValue *>( |
| 1345 | [&](SSAUseInfo useInfo, Type *type) -> SSAValue * { |
| 1346 | return resolveSSAUse(useInfo, type); |
| 1347 | }); |
| 1348 | } |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1349 | |
| 1350 | template <typename ValueTy> |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1351 | ParseResult |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1352 | parseOptionalSSAUseAndTypeList(SmallVectorImpl<ValueTy *> &results, |
| 1353 | bool isParenthesized); |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1354 | |
| 1355 | // Operations |
| 1356 | ParseResult parseOperation(const CreateOperationFunction &createOpFunc); |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1357 | Operation *parseVerboseOperation(const CreateOperationFunction &createOpFunc); |
| 1358 | Operation *parseCustomOperation(const CreateOperationFunction &createOpFunc); |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1359 | |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1360 | protected: |
| 1361 | FunctionParser(ParserState &state, Kind kind) : Parser(state), kind(kind) {} |
| 1362 | |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1363 | private: |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1364 | /// Kind indicates if this is CFG or ML function parser. |
| 1365 | Kind kind; |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1366 | /// This keeps track of all of the SSA values we are tracking, indexed by |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1367 | /// their name. This has one entry per result number. |
| 1368 | llvm::StringMap<SmallVector<std::pair<SSAValue *, SMLoc>, 1>> values; |
| 1369 | |
| 1370 | /// These are all of the placeholders we've made along with the location of |
| 1371 | /// their first reference, to allow checking for use of undefined values. |
| 1372 | DenseMap<SSAValue *, SMLoc> forwardReferencePlaceholders; |
| 1373 | |
| 1374 | SSAValue *createForwardReferencePlaceholder(SMLoc loc, Type *type); |
| 1375 | |
| 1376 | /// Return true if this is a forward reference. |
| 1377 | bool isForwardReferencePlaceholder(SSAValue *value) { |
| 1378 | return forwardReferencePlaceholders.count(value); |
| 1379 | } |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1380 | }; |
| 1381 | } // end anonymous namespace |
| 1382 | |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1383 | /// Create and remember a new placeholder for a forward reference. |
| 1384 | SSAValue *FunctionParser::createForwardReferencePlaceholder(SMLoc loc, |
| 1385 | Type *type) { |
| 1386 | // Forward references are always created as instructions, even in ML |
| 1387 | // functions, because we just need something with a def/use chain. |
| 1388 | // |
| 1389 | // We create these placeholders as having an empty name, which we know cannot |
| 1390 | // be created through normal user input, allowing us to distinguish them. |
| 1391 | auto name = Identifier::get("placeholder", getContext()); |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 1392 | auto *inst = |
| 1393 | // FIXME(clattner): encode the location into the placeholder instead of |
| 1394 | // into the forwardReferencePlaceholders map! |
| 1395 | OperationInst::create(/*location=*/nullptr, name, /*operands=*/{}, type, |
| 1396 | /*attrs=*/{}, getContext()); |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1397 | forwardReferencePlaceholders[inst->getResult(0)] = loc; |
| 1398 | return inst->getResult(0); |
| 1399 | } |
| 1400 | |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1401 | /// Given an unbound reference to an SSA value and its type, return the value |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1402 | /// it specifies. This returns null on failure. |
| 1403 | SSAValue *FunctionParser::resolveSSAUse(SSAUseInfo useInfo, Type *type) { |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1404 | auto &entries = values[useInfo.name]; |
| 1405 | |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1406 | // If we have already seen a value of this name, return it. |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1407 | if (useInfo.number < entries.size() && entries[useInfo.number].first) { |
| 1408 | auto *result = entries[useInfo.number].first; |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1409 | // Check that the type matches the other uses. |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1410 | if (result->getType() == type) |
| 1411 | return result; |
| 1412 | |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1413 | emitError(useInfo.loc, "use of value '" + useInfo.name.str() + |
| 1414 | "' expects different type than prior uses"); |
| 1415 | emitError(entries[useInfo.number].second, "prior use here"); |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1416 | return nullptr; |
| 1417 | } |
| 1418 | |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1419 | // Make sure we have enough slots for this. |
| 1420 | if (entries.size() <= useInfo.number) |
| 1421 | entries.resize(useInfo.number + 1); |
| 1422 | |
| 1423 | // If the value has already been defined and this is an overly large result |
| 1424 | // number, diagnose that. |
| 1425 | if (entries[0].first && !isForwardReferencePlaceholder(entries[0].first)) |
| 1426 | return (emitError(useInfo.loc, "reference to invalid result number"), |
| 1427 | nullptr); |
| 1428 | |
Tatiana Shpeisman | d880b35 | 2018-07-31 23:14:16 -0700 | [diff] [blame] | 1429 | // Otherwise, this is a forward reference. If we are in ML function return |
| 1430 | // an error. In CFG function, create a placeholder and remember |
| 1431 | // that we did so. |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1432 | if (getKind() == Kind::MLFunc) |
| 1433 | return ( |
| 1434 | emitError(useInfo.loc, "use of undefined SSA value " + useInfo.name), |
| 1435 | nullptr); |
| 1436 | |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1437 | auto *result = createForwardReferencePlaceholder(useInfo.loc, type); |
| 1438 | entries[useInfo.number].first = result; |
| 1439 | entries[useInfo.number].second = useInfo.loc; |
| 1440 | return result; |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | /// Register a definition of a value with the symbol table. |
| 1444 | ParseResult FunctionParser::addDefinition(SSAUseInfo useInfo, SSAValue *value) { |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1445 | auto &entries = values[useInfo.name]; |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1446 | |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1447 | // Make sure there is a slot for this value. |
| 1448 | if (entries.size() <= useInfo.number) |
| 1449 | entries.resize(useInfo.number + 1); |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1450 | |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1451 | // If we already have an entry for this, check to see if it was a definition |
| 1452 | // or a forward reference. |
| 1453 | if (auto *existing = entries[useInfo.number].first) { |
| 1454 | if (!isForwardReferencePlaceholder(existing)) { |
| 1455 | emitError(useInfo.loc, |
| 1456 | "redefinition of SSA value '" + useInfo.name + "'"); |
| 1457 | return emitError(entries[useInfo.number].second, |
| 1458 | "previously defined here"); |
| 1459 | } |
| 1460 | |
| 1461 | // If it was a forward reference, update everything that used it to use the |
| 1462 | // actual definition instead, delete the forward ref, and remove it from our |
| 1463 | // set of forward references we track. |
| 1464 | existing->replaceAllUsesWith(value); |
| 1465 | existing->getDefiningInst()->destroy(); |
| 1466 | forwardReferencePlaceholders.erase(existing); |
| 1467 | } |
| 1468 | |
| 1469 | entries[useInfo.number].first = value; |
| 1470 | entries[useInfo.number].second = useInfo.loc; |
| 1471 | return ParseSuccess; |
| 1472 | } |
| 1473 | |
| 1474 | /// After the function is finished parsing, this function checks to see if |
| 1475 | /// there are any remaining issues. |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1476 | ParseResult FunctionParser::finalizeFunction(Function *func, SMLoc loc) { |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1477 | // Check for any forward references that are left. If we find any, error out. |
| 1478 | if (!forwardReferencePlaceholders.empty()) { |
| 1479 | SmallVector<std::pair<const char *, SSAValue *>, 4> errors; |
| 1480 | // Iteration over the map isn't determinstic, so sort by source location. |
| 1481 | for (auto entry : forwardReferencePlaceholders) |
| 1482 | errors.push_back({entry.second.getPointer(), entry.first}); |
| 1483 | llvm::array_pod_sort(errors.begin(), errors.end()); |
| 1484 | |
| 1485 | for (auto entry : errors) |
| 1486 | emitError(SMLoc::getFromPointer(entry.first), |
| 1487 | "use of undeclared SSA value name"); |
| 1488 | return ParseFailure; |
| 1489 | } |
| 1490 | |
| 1491 | return ParseSuccess; |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1492 | } |
| 1493 | |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1494 | /// Parse a SSA operand for an instruction or statement. |
| 1495 | /// |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1496 | /// ssa-use ::= ssa-id |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1497 | /// |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1498 | ParseResult FunctionParser::parseSSAUse(SSAUseInfo &result) { |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1499 | result.name = getTokenSpelling(); |
| 1500 | result.number = 0; |
| 1501 | result.loc = getToken().getLoc(); |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1502 | if (parseToken(Token::percent_identifier, "expected SSA operand")) |
| 1503 | return ParseFailure; |
Chris Lattner | 6119d38 | 2018-07-20 18:41:34 -0700 | [diff] [blame] | 1504 | |
| 1505 | // If we have an affine map ID, it is a result number. |
| 1506 | if (getToken().is(Token::hash_identifier)) { |
| 1507 | if (auto value = getToken().getHashIdentifierNumber()) |
| 1508 | result.number = value.getValue(); |
| 1509 | else |
| 1510 | return emitError("invalid SSA value result number"); |
| 1511 | consumeToken(Token::hash_identifier); |
| 1512 | } |
| 1513 | |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1514 | return ParseSuccess; |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1515 | } |
| 1516 | |
| 1517 | /// Parse a (possibly empty) list of SSA operands. |
| 1518 | /// |
| 1519 | /// ssa-use-list ::= ssa-use (`,` ssa-use)* |
| 1520 | /// ssa-use-list-opt ::= ssa-use-list? |
| 1521 | /// |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1522 | ParseResult |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1523 | FunctionParser::parseOptionalSSAUseList(SmallVectorImpl<SSAUseInfo> &results) { |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1524 | if (getToken().isNot(Token::percent_identifier)) |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1525 | return ParseSuccess; |
| 1526 | return parseCommaSeparatedList([&]() -> ParseResult { |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1527 | SSAUseInfo result; |
| 1528 | if (parseSSAUse(result)) |
| 1529 | return ParseFailure; |
| 1530 | results.push_back(result); |
| 1531 | return ParseSuccess; |
| 1532 | }); |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1533 | } |
| 1534 | |
| 1535 | /// Parse an SSA use with an associated type. |
| 1536 | /// |
| 1537 | /// ssa-use-and-type ::= ssa-use `:` type |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1538 | template <typename ResultType> |
| 1539 | ResultType FunctionParser::parseSSADefOrUseAndType( |
| 1540 | const std::function<ResultType(SSAUseInfo, Type *)> &action) { |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1541 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1542 | SSAUseInfo useInfo; |
| 1543 | if (parseSSAUse(useInfo) || |
| 1544 | parseToken(Token::colon, "expected ':' and type for SSA operand")) |
| 1545 | return nullptr; |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1546 | |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1547 | auto *type = parseType(); |
| 1548 | if (!type) |
| 1549 | return nullptr; |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1550 | |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1551 | return action(useInfo, type); |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1552 | } |
| 1553 | |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1554 | /// Parse a (possibly empty) list of SSA operands, followed by a colon, then |
| 1555 | /// followed by a type list. If hasParens is true, then the operands are |
| 1556 | /// surrounded by parens. |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1557 | /// |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1558 | /// ssa-use-and-type-list[parens] |
| 1559 | /// ::= `(` ssa-use-list `)` ':' type-list-no-parens |
| 1560 | /// |
| 1561 | /// ssa-use-and-type-list[!parens] |
| 1562 | /// ::= ssa-use-list ':' type-list-no-parens |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1563 | /// |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1564 | template <typename ValueTy> |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1565 | ParseResult FunctionParser::parseOptionalSSAUseAndTypeList( |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1566 | SmallVectorImpl<ValueTy *> &results, bool isParenthesized) { |
| 1567 | |
| 1568 | // If we are in the parenthesized form and no paren exists, then we succeed |
| 1569 | // with an empty list. |
| 1570 | if (isParenthesized && !consumeIf(Token::l_paren)) |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 1571 | return ParseSuccess; |
| 1572 | |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1573 | SmallVector<SSAUseInfo, 4> valueIDs; |
| 1574 | if (parseOptionalSSAUseList(valueIDs)) |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1575 | return ParseFailure; |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1576 | |
| 1577 | if (isParenthesized && !consumeIf(Token::r_paren)) |
| 1578 | return emitError("expected ')' in operand list"); |
| 1579 | |
| 1580 | // If there were no operands, then there is no colon or type lists. |
| 1581 | if (valueIDs.empty()) |
| 1582 | return ParseSuccess; |
| 1583 | |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1584 | SmallVector<Type *, 4> types; |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1585 | if (parseToken(Token::colon, "expected ':' in operand list") || |
| 1586 | parseTypeListNoParens(types)) |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1587 | return ParseFailure; |
| 1588 | |
| 1589 | if (valueIDs.size() != types.size()) |
| 1590 | return emitError("expected " + Twine(valueIDs.size()) + |
| 1591 | " types to match operand list"); |
| 1592 | |
| 1593 | results.reserve(valueIDs.size()); |
| 1594 | for (unsigned i = 0, e = valueIDs.size(); i != e; ++i) { |
| 1595 | if (auto *value = resolveSSAUse(valueIDs[i], types[i])) |
| 1596 | results.push_back(cast<ValueTy>(value)); |
| 1597 | else |
| 1598 | return ParseFailure; |
| 1599 | } |
| 1600 | |
| 1601 | return ParseSuccess; |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 1602 | } |
| 1603 | |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1604 | /// Parse the CFG or MLFunc operation. |
| 1605 | /// |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1606 | /// operation ::= |
| 1607 | /// (ssa-id `=`)? string '(' ssa-use-list? ')' attribute-dict? |
| 1608 | /// `:` function-type |
| 1609 | /// |
| 1610 | ParseResult |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1611 | FunctionParser::parseOperation(const CreateOperationFunction &createOpFunc) { |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1612 | auto loc = getToken().getLoc(); |
| 1613 | |
| 1614 | StringRef resultID; |
| 1615 | if (getToken().is(Token::percent_identifier)) { |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1616 | resultID = getTokenSpelling(); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1617 | consumeToken(Token::percent_identifier); |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 1618 | if (parseToken(Token::equal, "expected '=' after SSA name")) |
| 1619 | return ParseFailure; |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1620 | } |
| 1621 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1622 | Operation *op; |
| 1623 | if (getToken().is(Token::bare_identifier) || getToken().isKeyword()) |
| 1624 | op = parseCustomOperation(createOpFunc); |
| 1625 | else if (getToken().is(Token::string)) |
| 1626 | op = parseVerboseOperation(createOpFunc); |
| 1627 | else |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1628 | return emitError("expected operation name in quotes"); |
| 1629 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1630 | // If parsing of the basic operation failed, then this whole thing fails. |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1631 | if (!op) |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1632 | return ParseFailure; |
| 1633 | |
| 1634 | // We just parsed an operation. If it is a recognized one, verify that it |
| 1635 | // is structurally as we expect. If not, produce an error with a reasonable |
| 1636 | // source location. |
Chris Lattner | 9586506 | 2018-08-01 10:18:59 -0700 | [diff] [blame] | 1637 | if (auto *opInfo = op->getAbstractOperation()) { |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1638 | if (auto error = opInfo->verifyInvariants(op)) |
Chris Lattner | 9361fb3 | 2018-07-24 08:34:58 -0700 | [diff] [blame] | 1639 | return emitError(loc, Twine("'") + op->getName().str() + "' op " + error); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1640 | } |
| 1641 | |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1642 | // If the instruction had a name, register it. |
| 1643 | if (!resultID.empty()) { |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1644 | if (op->getNumResults() == 0) |
| 1645 | return emitError(loc, "cannot name an operation with no results"); |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1646 | |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1647 | for (unsigned i = 0, e = op->getNumResults(); i != e; ++i) |
Chris Lattner | 2b97d50 | 2018-08-06 14:19:46 -0700 | [diff] [blame] | 1648 | if (addDefinition({resultID, i, loc}, op->getResult(i))) |
| 1649 | return ParseFailure; |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1650 | } |
| 1651 | |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 1652 | return ParseSuccess; |
| 1653 | } |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 1654 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1655 | Operation *FunctionParser::parseVerboseOperation( |
| 1656 | const CreateOperationFunction &createOpFunc) { |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 1657 | |
| 1658 | // Get location information for the operation. |
| 1659 | auto *srcLocation = getEncodedSourceLocation(getToken().getLoc()); |
| 1660 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1661 | auto name = getToken().getStringValue(); |
| 1662 | if (name.empty()) |
| 1663 | return (emitError("empty operation name is invalid"), nullptr); |
| 1664 | |
| 1665 | consumeToken(Token::string); |
| 1666 | |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 1667 | OperationState result(builder.getContext(), srcLocation, name); |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 1668 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1669 | // Parse the operand list. |
| 1670 | SmallVector<SSAUseInfo, 8> operandInfos; |
| 1671 | |
| 1672 | if (parseToken(Token::l_paren, "expected '(' to start operand list") || |
| 1673 | parseOptionalSSAUseList(operandInfos) || |
| 1674 | parseToken(Token::r_paren, "expected ')' to end operand list")) { |
| 1675 | return nullptr; |
| 1676 | } |
| 1677 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1678 | if (getToken().is(Token::l_brace)) { |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 1679 | if (parseAttributeDict(result.attributes)) |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1680 | return nullptr; |
| 1681 | } |
| 1682 | |
| 1683 | if (parseToken(Token::colon, "expected ':' followed by instruction type")) |
| 1684 | return nullptr; |
| 1685 | |
| 1686 | auto typeLoc = getToken().getLoc(); |
| 1687 | auto type = parseType(); |
| 1688 | if (!type) |
| 1689 | return nullptr; |
| 1690 | auto fnType = dyn_cast<FunctionType>(type); |
| 1691 | if (!fnType) |
| 1692 | return (emitError(typeLoc, "expected function type"), nullptr); |
| 1693 | |
Chris Lattner | 1eb7748 | 2018-08-22 19:25:49 -0700 | [diff] [blame] | 1694 | result.addTypes(fnType->getResults()); |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 1695 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1696 | // Check that we have the right number of types for the operands. |
| 1697 | auto operandTypes = fnType->getInputs(); |
| 1698 | if (operandTypes.size() != operandInfos.size()) { |
| 1699 | auto plural = "s"[operandInfos.size() == 1]; |
| 1700 | return (emitError(typeLoc, "expected " + llvm::utostr(operandInfos.size()) + |
| 1701 | " operand type" + plural + " but had " + |
| 1702 | llvm::utostr(operandTypes.size())), |
| 1703 | nullptr); |
| 1704 | } |
| 1705 | |
| 1706 | // Resolve all of the operands. |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1707 | for (unsigned i = 0, e = operandInfos.size(); i != e; ++i) { |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 1708 | result.operands.push_back(resolveSSAUse(operandInfos[i], operandTypes[i])); |
| 1709 | if (!result.operands.back()) |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1710 | return nullptr; |
| 1711 | } |
| 1712 | |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 1713 | return createOpFunc(result); |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | namespace { |
| 1717 | class CustomOpAsmParser : public OpAsmParser { |
| 1718 | public: |
| 1719 | CustomOpAsmParser(SMLoc nameLoc, StringRef opName, FunctionParser &parser) |
| 1720 | : nameLoc(nameLoc), opName(opName), parser(parser) {} |
| 1721 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1722 | //===--------------------------------------------------------------------===// |
| 1723 | // High level parsing methods. |
| 1724 | //===--------------------------------------------------------------------===// |
| 1725 | |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 1726 | bool getCurrentLocation(llvm::SMLoc *loc) override { |
| 1727 | *loc = parser.getToken().getLoc(); |
| 1728 | return false; |
| 1729 | } |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 1730 | bool parseComma() override { |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1731 | return parser.parseToken(Token::comma, "expected ','"); |
| 1732 | } |
| 1733 | |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 1734 | bool parseColonType(Type *&result) override { |
| 1735 | return parser.parseToken(Token::colon, "expected ':'") || |
| 1736 | !(result = parser.parseType()); |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1737 | } |
| 1738 | |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 1739 | bool parseColonTypeList(SmallVectorImpl<Type *> &result) override { |
| 1740 | if (parser.parseToken(Token::colon, "expected ':'")) |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1741 | return true; |
| 1742 | |
| 1743 | do { |
| 1744 | if (auto *type = parser.parseType()) |
| 1745 | result.push_back(type); |
| 1746 | else |
| 1747 | return true; |
| 1748 | |
| 1749 | } while (parser.consumeIf(Token::comma)); |
| 1750 | return false; |
| 1751 | } |
| 1752 | |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1753 | /// Parse an arbitrary attribute and return it in result. This also adds the |
| 1754 | /// attribute to the specified attribute list with the specified name. this |
| 1755 | /// captures the location of the attribute in 'loc' if it is non-null. |
| 1756 | bool parseAttribute(Attribute *&result, const char *attrName, |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 1757 | SmallVectorImpl<NamedAttribute> &attrs) override { |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1758 | result = parser.parseAttribute(); |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1759 | if (!result) |
| 1760 | return true; |
| 1761 | |
| 1762 | attrs.push_back( |
| 1763 | NamedAttribute(parser.builder.getIdentifier(attrName), result)); |
| 1764 | return false; |
| 1765 | } |
| 1766 | |
| 1767 | /// If a named attribute list is present, parse is into result. |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 1768 | bool |
| 1769 | parseOptionalAttributeDict(SmallVectorImpl<NamedAttribute> &result) override { |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1770 | if (parser.getToken().isNot(Token::l_brace)) |
| 1771 | return false; |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1772 | return parser.parseAttributeDict(result) == ParseFailure; |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1773 | } |
| 1774 | |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 1775 | /// Parse a function name like '@foo' and return the name in a form that can |
| 1776 | /// be passed to resolveFunctionName when a function type is available. |
| 1777 | virtual bool parseFunctionName(StringRef &result, llvm::SMLoc &loc) { |
| 1778 | loc = parser.getToken().getLoc(); |
| 1779 | |
| 1780 | if (parser.getToken().isNot(Token::at_identifier)) |
| 1781 | return emitError(loc, "expected function name"); |
| 1782 | |
| 1783 | result = parser.getTokenSpelling(); |
| 1784 | parser.consumeToken(Token::at_identifier); |
| 1785 | return false; |
| 1786 | } |
| 1787 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1788 | bool parseOperand(OperandType &result) override { |
| 1789 | FunctionParser::SSAUseInfo useInfo; |
| 1790 | if (parser.parseSSAUse(useInfo)) |
| 1791 | return true; |
| 1792 | |
| 1793 | result = {useInfo.loc, useInfo.name, useInfo.number}; |
| 1794 | return false; |
| 1795 | } |
| 1796 | |
| 1797 | bool parseOperandList(SmallVectorImpl<OperandType> &result, |
| 1798 | int requiredOperandCount = -1, |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1799 | Delimiter delimiter = Delimiter::None) override { |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1800 | auto startLoc = parser.getToken().getLoc(); |
| 1801 | |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1802 | // Handle delimiters. |
| 1803 | switch (delimiter) { |
| 1804 | case Delimiter::None: |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1805 | break; |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1806 | case Delimiter::OptionalParen: |
Chris Lattner | 3164ae6 | 2018-07-28 09:36:25 -0700 | [diff] [blame] | 1807 | if (parser.getToken().isNot(Token::l_paren)) |
| 1808 | return false; |
| 1809 | LLVM_FALLTHROUGH; |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1810 | case Delimiter::Paren: |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1811 | if (parser.parseToken(Token::l_paren, "expected '(' in operand list")) |
| 1812 | return true; |
| 1813 | break; |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1814 | case Delimiter::OptionalSquare: |
Chris Lattner | 3164ae6 | 2018-07-28 09:36:25 -0700 | [diff] [blame] | 1815 | if (parser.getToken().isNot(Token::l_square)) |
| 1816 | return false; |
| 1817 | LLVM_FALLTHROUGH; |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1818 | case Delimiter::Square: |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1819 | if (parser.parseToken(Token::l_square, "expected '[' in operand list")) |
| 1820 | return true; |
| 1821 | break; |
| 1822 | } |
| 1823 | |
| 1824 | // Check for zero operands. |
| 1825 | if (parser.getToken().is(Token::percent_identifier)) { |
| 1826 | do { |
| 1827 | OperandType operand; |
| 1828 | if (parseOperand(operand)) |
| 1829 | return true; |
| 1830 | result.push_back(operand); |
| 1831 | } while (parser.consumeIf(Token::comma)); |
| 1832 | } |
| 1833 | |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1834 | // Handle delimiters. If we reach here, the optional delimiters were |
Chris Lattner | 3164ae6 | 2018-07-28 09:36:25 -0700 | [diff] [blame] | 1835 | // present, so we need to parse their closing one. |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1836 | switch (delimiter) { |
| 1837 | case Delimiter::None: |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1838 | break; |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1839 | case Delimiter::OptionalParen: |
| 1840 | case Delimiter::Paren: |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1841 | if (parser.parseToken(Token::r_paren, "expected ')' in operand list")) |
| 1842 | return true; |
| 1843 | break; |
Chris Lattner | 85cf26d | 2018-08-02 16:54:36 -0700 | [diff] [blame] | 1844 | case Delimiter::OptionalSquare: |
| 1845 | case Delimiter::Square: |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1846 | if (parser.parseToken(Token::r_square, "expected ']' in operand list")) |
| 1847 | return true; |
| 1848 | break; |
| 1849 | } |
| 1850 | |
| 1851 | if (requiredOperandCount != -1 && result.size() != requiredOperandCount) |
| 1852 | emitError(startLoc, |
| 1853 | "expected " + Twine(requiredOperandCount) + " operands"); |
| 1854 | return false; |
| 1855 | } |
| 1856 | |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 1857 | /// Resolve a parse function name and a type into a function reference. |
| 1858 | virtual bool resolveFunctionName(StringRef name, FunctionType *type, |
| 1859 | llvm::SMLoc loc, Function *&result) { |
| 1860 | result = parser.resolveFunctionReference(name, loc, type); |
| 1861 | return result == nullptr; |
| 1862 | } |
| 1863 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1864 | //===--------------------------------------------------------------------===// |
| 1865 | // Methods for interacting with the parser |
| 1866 | //===--------------------------------------------------------------------===// |
| 1867 | |
| 1868 | Builder &getBuilder() const override { return parser.builder; } |
| 1869 | |
| 1870 | llvm::SMLoc getNameLoc() const override { return nameLoc; } |
| 1871 | |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 1872 | bool resolveOperand(const OperandType &operand, Type *type, |
Chris Lattner | 8bdbebf | 2018-08-08 11:02:58 -0700 | [diff] [blame] | 1873 | SmallVectorImpl<SSAValue *> &result) override { |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1874 | FunctionParser::SSAUseInfo operandInfo = {operand.name, operand.number, |
| 1875 | operand.location}; |
Chris Lattner | 8bdbebf | 2018-08-08 11:02:58 -0700 | [diff] [blame] | 1876 | if (auto *value = parser.resolveSSAUse(operandInfo, type)) { |
| 1877 | result.push_back(value); |
| 1878 | return false; |
| 1879 | } |
| 1880 | return true; |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1881 | } |
| 1882 | |
Chris Lattner | eed6c4d | 2018-08-07 09:12:35 -0700 | [diff] [blame] | 1883 | /// Emit a diagnostic at the specified location and return true. |
| 1884 | bool emitError(llvm::SMLoc loc, const Twine &message) override { |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1885 | parser.emitError(loc, "custom op '" + Twine(opName) + "' " + message); |
| 1886 | emittedError = true; |
Chris Lattner | eed6c4d | 2018-08-07 09:12:35 -0700 | [diff] [blame] | 1887 | return true; |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1888 | } |
| 1889 | |
| 1890 | bool didEmitError() const { return emittedError; } |
| 1891 | |
| 1892 | private: |
| 1893 | SMLoc nameLoc; |
| 1894 | StringRef opName; |
| 1895 | FunctionParser &parser; |
| 1896 | bool emittedError = false; |
| 1897 | }; |
| 1898 | } // end anonymous namespace. |
| 1899 | |
| 1900 | Operation *FunctionParser::parseCustomOperation( |
| 1901 | const CreateOperationFunction &createOpFunc) { |
| 1902 | auto opLoc = getToken().getLoc(); |
| 1903 | auto opName = getTokenSpelling(); |
| 1904 | CustomOpAsmParser opAsmParser(opLoc, opName, *this); |
| 1905 | |
| 1906 | auto *opDefinition = getOperationSet().lookup(opName); |
| 1907 | if (!opDefinition) { |
| 1908 | opAsmParser.emitError(opLoc, "is unknown"); |
| 1909 | return nullptr; |
| 1910 | } |
| 1911 | |
| 1912 | consumeToken(); |
| 1913 | |
Chris Lattner | 1aa4632 | 2018-08-21 17:55:22 -0700 | [diff] [blame] | 1914 | // If the custom op parser crashes, produce some indication to help debugging. |
| 1915 | std::string opNameStr = opName.str(); |
| 1916 | llvm::PrettyStackTraceFormat fmt("MLIR Parser: custom op parser '%s'", |
| 1917 | opNameStr.c_str()); |
| 1918 | |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 1919 | // Get location information for the operation. |
| 1920 | auto *srcLocation = getEncodedSourceLocation(opLoc); |
| 1921 | |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1922 | // Have the op implementation take a crack and parsing this. |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 1923 | OperationState opState(builder.getContext(), srcLocation, opName); |
Chris Lattner | eed6c4d | 2018-08-07 09:12:35 -0700 | [diff] [blame] | 1924 | if (opDefinition->parseAssembly(&opAsmParser, &opState)) |
| 1925 | return nullptr; |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1926 | |
| 1927 | // If it emitted an error, we failed. |
| 1928 | if (opAsmParser.didEmitError()) |
| 1929 | return nullptr; |
| 1930 | |
| 1931 | // Otherwise, we succeeded. Use the state it parsed as our op information. |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 1932 | return createOpFunc(opState); |
Chris Lattner | 85ee151 | 2018-07-25 11:15:20 -0700 | [diff] [blame] | 1933 | } |
| 1934 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1935 | //===----------------------------------------------------------------------===// |
| 1936 | // CFG Functions |
| 1937 | //===----------------------------------------------------------------------===// |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 1938 | |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 1939 | namespace { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1940 | /// This is a specialized parser for CFGFunction's, maintaining the state |
| 1941 | /// transient to their bodies. |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 1942 | class CFGFunctionParser : public FunctionParser { |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 1943 | public: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1944 | CFGFunctionParser(ParserState &state, CFGFunction *function) |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 1945 | : FunctionParser(state, Kind::CFGFunc), function(function), |
| 1946 | builder(function) {} |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 1947 | |
| 1948 | ParseResult parseFunctionBody(); |
| 1949 | |
| 1950 | private: |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 1951 | CFGFunction *function; |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 1952 | llvm::StringMap<std::pair<BasicBlock *, SMLoc>> blocksByName; |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1953 | |
| 1954 | /// This builder intentionally shadows the builder in the base class, with a |
| 1955 | /// more specific builder type. |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 1956 | CFGFuncBuilder builder; |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 1957 | |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 1958 | /// Get the basic block with the specified name, creating it if it doesn't |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 1959 | /// already exist. The location specified is the point of use, which allows |
| 1960 | /// us to diagnose references to blocks that are not defined precisely. |
| 1961 | BasicBlock *getBlockNamed(StringRef name, SMLoc loc) { |
| 1962 | auto &blockAndLoc = blocksByName[name]; |
| 1963 | if (!blockAndLoc.first) { |
Chris Lattner | 3a467cc | 2018-07-01 20:28:00 -0700 | [diff] [blame] | 1964 | blockAndLoc.first = new BasicBlock(); |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 1965 | blockAndLoc.second = loc; |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 1966 | } |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 1967 | return blockAndLoc.first; |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 1968 | } |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1969 | |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1970 | ParseResult |
| 1971 | parseOptionalBasicBlockArgList(SmallVectorImpl<BBArgument *> &results, |
| 1972 | BasicBlock *owner); |
James Molloy | 4f78837 | 2018-07-24 15:01:27 -0700 | [diff] [blame] | 1973 | ParseResult parseBranchBlockAndUseList(BasicBlock *&block, |
| 1974 | SmallVectorImpl<CFGValue *> &values); |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1975 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1976 | ParseResult parseBasicBlock(); |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 1977 | TerminatorInst *parseTerminator(); |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 1978 | }; |
| 1979 | } // end anonymous namespace |
| 1980 | |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1981 | /// Parse a (possibly empty) list of SSA operands with types as basic block |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 1982 | /// arguments. |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1983 | /// |
| 1984 | /// ssa-id-and-type-list ::= ssa-id-and-type (`,` ssa-id-and-type)* |
| 1985 | /// |
| 1986 | ParseResult CFGFunctionParser::parseOptionalBasicBlockArgList( |
| 1987 | SmallVectorImpl<BBArgument *> &results, BasicBlock *owner) { |
| 1988 | if (getToken().is(Token::r_brace)) |
| 1989 | return ParseSuccess; |
| 1990 | |
| 1991 | return parseCommaSeparatedList([&]() -> ParseResult { |
| 1992 | auto type = parseSSADefOrUseAndType<Type *>( |
| 1993 | [&](SSAUseInfo useInfo, Type *type) -> Type * { |
| 1994 | BBArgument *arg = owner->addArgument(type); |
Chris Lattner | 2b97d50 | 2018-08-06 14:19:46 -0700 | [diff] [blame] | 1995 | if (addDefinition(useInfo, arg)) |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 1996 | return nullptr; |
| 1997 | return type; |
| 1998 | }); |
| 1999 | return type ? ParseSuccess : ParseFailure; |
| 2000 | }); |
| 2001 | } |
| 2002 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2003 | ParseResult CFGFunctionParser::parseFunctionBody() { |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2004 | auto braceLoc = getToken().getLoc(); |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2005 | if (parseToken(Token::l_brace, "expected '{' in CFG function")) |
| 2006 | return ParseFailure; |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2007 | |
| 2008 | // Make sure we have at least one block. |
| 2009 | if (getToken().is(Token::r_brace)) |
| 2010 | return emitError("CFG functions must have at least one basic block"); |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2011 | |
| 2012 | // Parse the list of blocks. |
| 2013 | while (!consumeIf(Token::r_brace)) |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2014 | if (parseBasicBlock()) |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2015 | return ParseFailure; |
| 2016 | |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2017 | // Verify that all referenced blocks were defined. Iteration over a |
| 2018 | // StringMap isn't determinstic, but this is good enough for our purposes. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2019 | for (auto &elt : blocksByName) { |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2020 | auto *bb = elt.second.first; |
Chris Lattner | 3a467cc | 2018-07-01 20:28:00 -0700 | [diff] [blame] | 2021 | if (!bb->getFunction()) |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2022 | return emitError(elt.second.second, |
James Molloy | 0ff7154 | 2018-07-23 16:56:32 -0700 | [diff] [blame] | 2023 | "reference to an undefined basic block '" + elt.first() + |
| 2024 | "'"); |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2025 | } |
| 2026 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2027 | return finalizeFunction(function, braceLoc); |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2028 | } |
| 2029 | |
| 2030 | /// Basic block declaration. |
| 2031 | /// |
| 2032 | /// basic-block ::= bb-label instruction* terminator-stmt |
| 2033 | /// bb-label ::= bb-id bb-arg-list? `:` |
| 2034 | /// bb-id ::= bare-id |
| 2035 | /// bb-arg-list ::= `(` ssa-id-and-type-list? `)` |
| 2036 | /// |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2037 | ParseResult CFGFunctionParser::parseBasicBlock() { |
| 2038 | SMLoc nameLoc = getToken().getLoc(); |
| 2039 | auto name = getTokenSpelling(); |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2040 | if (parseToken(Token::bare_identifier, "expected basic block name")) |
| 2041 | return ParseFailure; |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2042 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2043 | auto *block = getBlockNamed(name, nameLoc); |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2044 | |
| 2045 | // If this block has already been parsed, then this is a redefinition with the |
| 2046 | // same block name. |
Chris Lattner | 3a467cc | 2018-07-01 20:28:00 -0700 | [diff] [blame] | 2047 | if (block->getFunction()) |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2048 | return emitError(nameLoc, "redefinition of block '" + name.str() + "'"); |
| 2049 | |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 2050 | // If an argument list is present, parse it. |
| 2051 | if (consumeIf(Token::l_paren)) { |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 2052 | SmallVector<BBArgument *, 8> bbArgs; |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2053 | if (parseOptionalBasicBlockArgList(bbArgs, block) || |
| 2054 | parseToken(Token::r_paren, "expected ')' to end argument list")) |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 2055 | return ParseFailure; |
Chris Lattner | 78276e3 | 2018-07-07 15:48:26 -0700 | [diff] [blame] | 2056 | } |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2057 | |
James Molloy | 61a656c | 2018-07-22 15:45:24 -0700 | [diff] [blame] | 2058 | // Add the block to the function. |
| 2059 | function->push_back(block); |
| 2060 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2061 | if (parseToken(Token::colon, "expected ':' after basic block name")) |
| 2062 | return ParseFailure; |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2063 | |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 2064 | // Set the insertion point to the block we want to insert new operations into. |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2065 | builder.setInsertionPoint(block); |
Chris Lattner | 158e0a3e | 2018-07-08 20:51:38 -0700 | [diff] [blame] | 2066 | |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 2067 | auto createOpFunc = [&](const OperationState &result) -> Operation * { |
| 2068 | return builder.createOperation(result); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2069 | }; |
| 2070 | |
Chris Lattner | ed65a73 | 2018-06-28 20:45:33 -0700 | [diff] [blame] | 2071 | // Parse the list of operations that make up the body of the block. |
James Molloy | 4f78837 | 2018-07-24 15:01:27 -0700 | [diff] [blame] | 2072 | while (getToken().isNot(Token::kw_return, Token::kw_br, Token::kw_cond_br)) { |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2073 | if (parseOperation(createOpFunc)) |
Chris Lattner | ed65a73 | 2018-06-28 20:45:33 -0700 | [diff] [blame] | 2074 | return ParseFailure; |
| 2075 | } |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2076 | |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2077 | if (!parseTerminator()) |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2078 | return ParseFailure; |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2079 | |
| 2080 | return ParseSuccess; |
| 2081 | } |
| 2082 | |
James Molloy | 4f78837 | 2018-07-24 15:01:27 -0700 | [diff] [blame] | 2083 | ParseResult CFGFunctionParser::parseBranchBlockAndUseList( |
| 2084 | BasicBlock *&block, SmallVectorImpl<CFGValue *> &values) { |
| 2085 | block = getBlockNamed(getTokenSpelling(), getToken().getLoc()); |
| 2086 | if (parseToken(Token::bare_identifier, "expected basic block name")) |
| 2087 | return ParseFailure; |
| 2088 | |
| 2089 | if (!consumeIf(Token::l_paren)) |
| 2090 | return ParseSuccess; |
| 2091 | if (parseOptionalSSAUseAndTypeList(values, /*isParenthesized*/ false) || |
| 2092 | parseToken(Token::r_paren, "expected ')' to close argument list")) |
| 2093 | return ParseFailure; |
| 2094 | return ParseSuccess; |
| 2095 | } |
| 2096 | |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2097 | /// Parse the terminator instruction for a basic block. |
| 2098 | /// |
| 2099 | /// terminator-stmt ::= `br` bb-id branch-use-list? |
Chris Lattner | 1604e47 | 2018-07-23 08:42:19 -0700 | [diff] [blame] | 2100 | /// branch-use-list ::= `(` ssa-use-list `)` ':' type-list-no-parens |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2101 | /// terminator-stmt ::= |
| 2102 | /// `cond_br` ssa-use `,` bb-id branch-use-list? `,` bb-id branch-use-list? |
| 2103 | /// terminator-stmt ::= `return` ssa-use-and-type-list? |
| 2104 | /// |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2105 | TerminatorInst *CFGFunctionParser::parseTerminator() { |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 2106 | auto loc = getToken().getLoc(); |
| 2107 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2108 | switch (getToken().getKind()) { |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2109 | default: |
Chris Lattner | 3a467cc | 2018-07-01 20:28:00 -0700 | [diff] [blame] | 2110 | return (emitError("expected terminator at end of basic block"), nullptr); |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2111 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2112 | case Token::kw_return: { |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2113 | consumeToken(Token::kw_return); |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2114 | |
Chris Lattner | 2c40267 | 2018-07-23 11:56:17 -0700 | [diff] [blame] | 2115 | // Parse any operands. |
| 2116 | SmallVector<CFGValue *, 8> operands; |
| 2117 | if (parseOptionalSSAUseAndTypeList(operands, /*isParenthesized*/ false)) |
| 2118 | return nullptr; |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 2119 | return builder.createReturn(getEncodedSourceLocation(loc), operands); |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2120 | } |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2121 | |
| 2122 | case Token::kw_br: { |
| 2123 | consumeToken(Token::kw_br); |
James Molloy | 4f78837 | 2018-07-24 15:01:27 -0700 | [diff] [blame] | 2124 | BasicBlock *destBB; |
| 2125 | SmallVector<CFGValue *, 4> values; |
| 2126 | if (parseBranchBlockAndUseList(destBB, values)) |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2127 | return nullptr; |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 2128 | auto branch = builder.createBranch(getEncodedSourceLocation(loc), destBB); |
James Molloy | 4f78837 | 2018-07-24 15:01:27 -0700 | [diff] [blame] | 2129 | branch->addOperands(values); |
Chris Lattner | 1604e47 | 2018-07-23 08:42:19 -0700 | [diff] [blame] | 2130 | return branch; |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2131 | } |
James Molloy | 4f78837 | 2018-07-24 15:01:27 -0700 | [diff] [blame] | 2132 | |
| 2133 | case Token::kw_cond_br: { |
| 2134 | consumeToken(Token::kw_cond_br); |
| 2135 | SSAUseInfo ssaUse; |
| 2136 | if (parseSSAUse(ssaUse)) |
| 2137 | return nullptr; |
| 2138 | auto *cond = resolveSSAUse(ssaUse, builder.getIntegerType(1)); |
| 2139 | if (!cond) |
| 2140 | return (emitError("expected type was boolean (i1)"), nullptr); |
| 2141 | if (parseToken(Token::comma, "expected ',' in conditional branch")) |
| 2142 | return nullptr; |
| 2143 | |
| 2144 | BasicBlock *trueBlock; |
| 2145 | SmallVector<CFGValue *, 4> trueOperands; |
| 2146 | if (parseBranchBlockAndUseList(trueBlock, trueOperands)) |
| 2147 | return nullptr; |
| 2148 | |
| 2149 | if (parseToken(Token::comma, "expected ',' in conditional branch")) |
| 2150 | return nullptr; |
| 2151 | |
| 2152 | BasicBlock *falseBlock; |
| 2153 | SmallVector<CFGValue *, 4> falseOperands; |
| 2154 | if (parseBranchBlockAndUseList(falseBlock, falseOperands)) |
| 2155 | return nullptr; |
| 2156 | |
Chris Lattner | 091a6b5 | 2018-08-23 14:58:27 -0700 | [diff] [blame] | 2157 | auto branch = |
| 2158 | builder.createCondBranch(getEncodedSourceLocation(loc), |
| 2159 | cast<CFGValue>(cond), trueBlock, falseBlock); |
James Molloy | 4f78837 | 2018-07-24 15:01:27 -0700 | [diff] [blame] | 2160 | branch->addTrueOperands(trueOperands); |
| 2161 | branch->addFalseOperands(falseOperands); |
| 2162 | return branch; |
| 2163 | } |
Chris Lattner | f6d80a0 | 2018-06-24 11:18:29 -0700 | [diff] [blame] | 2164 | } |
| 2165 | } |
| 2166 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2167 | //===----------------------------------------------------------------------===// |
| 2168 | // ML Functions |
| 2169 | //===----------------------------------------------------------------------===// |
| 2170 | |
| 2171 | namespace { |
| 2172 | /// Refined parser for MLFunction bodies. |
Chris Lattner | 7f9cc27 | 2018-07-19 08:35:28 -0700 | [diff] [blame] | 2173 | class MLFunctionParser : public FunctionParser { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2174 | public: |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2175 | MLFunctionParser(ParserState &state, MLFunction *function) |
Tatiana Shpeisman | 60bf7be | 2018-07-26 18:09:20 -0700 | [diff] [blame] | 2176 | : FunctionParser(state, Kind::MLFunc), function(function), |
Chris Lattner | e787b32 | 2018-08-08 11:14:57 -0700 | [diff] [blame] | 2177 | builder(function, function->end()) {} |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2178 | |
| 2179 | ParseResult parseFunctionBody(); |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2180 | |
| 2181 | private: |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2182 | MLFunction *function; |
| 2183 | |
| 2184 | /// This builder intentionally shadows the builder in the base class, with a |
| 2185 | /// more specific builder type. |
| 2186 | MLFuncBuilder builder; |
| 2187 | |
| 2188 | ParseResult parseForStmt(); |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2189 | ParseResult parseIntConstant(int64_t &val); |
| 2190 | ParseResult parseDimAndSymbolList(SmallVectorImpl<MLValue *> &operands, |
| 2191 | const AffineMap *map); |
| 2192 | ParseResult parseBound(SmallVectorImpl<MLValue *> &operands, AffineMap *&map, |
| 2193 | bool isLower); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2194 | ParseResult parseIfStmt(); |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2195 | ParseResult parseElseClause(IfClause *elseClause); |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2196 | IntegerSet *parseCondition(); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2197 | ParseResult parseStatements(StmtBlock *block); |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2198 | ParseResult parseStmtBlock(StmtBlock *block); |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2199 | }; |
| 2200 | } // end anonymous namespace |
| 2201 | |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2202 | ParseResult MLFunctionParser::parseFunctionBody() { |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2203 | auto braceLoc = getToken().getLoc(); |
Tatiana Shpeisman | c96b587 | 2018-06-28 17:02:32 -0700 | [diff] [blame] | 2204 | |
Tatiana Shpeisman | d9b1d86 | 2018-08-09 12:28:58 -0700 | [diff] [blame] | 2205 | // Parse statements in this function. |
| 2206 | if (parseStmtBlock(function)) |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2207 | return ParseFailure; |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2208 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2209 | return finalizeFunction(function, braceLoc); |
Tatiana Shpeisman | c96b587 | 2018-06-28 17:02:32 -0700 | [diff] [blame] | 2210 | } |
| 2211 | |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2212 | /// For statement. |
| 2213 | /// |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2214 | /// ml-for-stmt ::= `for` ssa-id `=` lower-bound `to` upper-bound |
| 2215 | /// (`step` integer-literal)? `{` ml-stmt* `}` |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2216 | /// |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2217 | ParseResult MLFunctionParser::parseForStmt() { |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2218 | consumeToken(Token::kw_for); |
| 2219 | |
Uday Bondhugula | 6770171 | 2018-08-21 16:01:23 -0700 | [diff] [blame] | 2220 | // Parse induction variable. |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2221 | if (getToken().isNot(Token::percent_identifier)) |
| 2222 | return emitError("expected SSA identifier for the loop variable"); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2223 | |
Tatiana Shpeisman | 3838db7 | 2018-07-30 15:18:10 -0700 | [diff] [blame] | 2224 | auto loc = getToken().getLoc(); |
Tatiana Shpeisman | d880b35 | 2018-07-31 23:14:16 -0700 | [diff] [blame] | 2225 | StringRef inductionVariableName = getTokenSpelling(); |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2226 | consumeToken(Token::percent_identifier); |
| 2227 | |
Tatiana Shpeisman | d9b1d86 | 2018-08-09 12:28:58 -0700 | [diff] [blame] | 2228 | if (parseToken(Token::equal, "expected '='")) |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2229 | return ParseFailure; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2230 | |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2231 | // Parse lower bound. |
| 2232 | SmallVector<MLValue *, 4> lbOperands; |
| 2233 | AffineMap *lbMap = nullptr; |
| 2234 | if (parseBound(lbOperands, lbMap, /*isLower*/ true)) |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2235 | return ParseFailure; |
| 2236 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2237 | if (parseToken(Token::kw_to, "expected 'to' between bounds")) |
| 2238 | return ParseFailure; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2239 | |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2240 | // Parse upper bound. |
| 2241 | SmallVector<MLValue *, 4> ubOperands; |
| 2242 | AffineMap *ubMap = nullptr; |
| 2243 | if (parseBound(ubOperands, ubMap, /*isLower*/ false)) |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2244 | return ParseFailure; |
| 2245 | |
Uday Bondhugula | 6770171 | 2018-08-21 16:01:23 -0700 | [diff] [blame] | 2246 | // Parse step. |
| 2247 | int64_t step = 1; |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2248 | if (consumeIf(Token::kw_step) && parseIntConstant(step)) |
| 2249 | return ParseFailure; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2250 | |
| 2251 | // Create for statement. |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2252 | ForStmt *forStmt = |
| 2253 | builder.createFor(getEncodedSourceLocation(loc), lbOperands, lbMap, |
| 2254 | ubOperands, ubMap, step); |
Tatiana Shpeisman | 3838db7 | 2018-07-30 15:18:10 -0700 | [diff] [blame] | 2255 | |
| 2256 | // Create SSA value definition for the induction variable. |
Chris Lattner | 2b97d50 | 2018-08-06 14:19:46 -0700 | [diff] [blame] | 2257 | if (addDefinition({inductionVariableName, 0, loc}, forStmt)) |
| 2258 | return ParseFailure; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2259 | |
| 2260 | // If parsing of the for statement body fails, |
| 2261 | // MLIR contains for statement with those nested statements that have been |
| 2262 | // successfully parsed. |
Tatiana Shpeisman | 3838db7 | 2018-07-30 15:18:10 -0700 | [diff] [blame] | 2263 | if (parseStmtBlock(forStmt)) |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2264 | return ParseFailure; |
| 2265 | |
Tatiana Shpeisman | 3838db7 | 2018-07-30 15:18:10 -0700 | [diff] [blame] | 2266 | // Reset insertion point to the current block. |
Chris Lattner | e787b32 | 2018-08-08 11:14:57 -0700 | [diff] [blame] | 2267 | builder.setInsertionPointToEnd(forStmt->getBlock()); |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2268 | |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2269 | return ParseSuccess; |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2270 | } |
| 2271 | |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2272 | /// Parse integer constant as affine constant expression. |
| 2273 | ParseResult MLFunctionParser::parseIntConstant(int64_t &val) { |
| 2274 | bool negate = consumeIf(Token::minus); |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2275 | |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2276 | if (getToken().isNot(Token::integer)) |
| 2277 | return emitError("expected integer"); |
| 2278 | |
| 2279 | auto uval = getToken().getUInt64IntegerValue(); |
| 2280 | |
| 2281 | if (!uval.hasValue() || (int64_t)uval.getValue() < 0) { |
| 2282 | return emitError("bound or step is too large for affineint"); |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2283 | } |
Tatiana Shpeisman | de8829f | 2018-08-24 23:38:14 -0700 | [diff] [blame] | 2284 | |
| 2285 | val = (int64_t)uval.getValue(); |
| 2286 | if (negate) |
| 2287 | val = -val; |
| 2288 | consumeToken(); |
| 2289 | |
| 2290 | return ParseSuccess; |
| 2291 | } |
| 2292 | |
| 2293 | /// Dimensions and symbol use list. |
| 2294 | /// |
| 2295 | /// dim-use-list ::= `(` ssa-use-list? `)` |
| 2296 | /// symbol-use-list ::= `[` ssa-use-list? `]` |
| 2297 | /// dim-and-symbol-use-list ::= dim-use-list symbol-use-list? |
| 2298 | /// |
| 2299 | ParseResult |
| 2300 | MLFunctionParser::parseDimAndSymbolList(SmallVectorImpl<MLValue *> &operands, |
| 2301 | const AffineMap *map) { |
| 2302 | if (parseToken(Token::l_paren, "expected '('")) |
| 2303 | return ParseFailure; |
| 2304 | |
| 2305 | SmallVector<SSAUseInfo, 4> opInfo; |
| 2306 | parseOptionalSSAUseList(opInfo); |
| 2307 | |
| 2308 | if (parseToken(Token::r_paren, "expected ')'")) |
| 2309 | return ParseFailure; |
| 2310 | |
| 2311 | if (map->getNumDims() != opInfo.size()) |
| 2312 | return emitError("dim operand count and affine map dim count must match"); |
| 2313 | |
| 2314 | if (consumeIf(Token::l_square)) { |
| 2315 | parseOptionalSSAUseList(opInfo); |
| 2316 | if (parseToken(Token::r_square, "expected ']'")) |
| 2317 | return ParseFailure; |
| 2318 | } |
| 2319 | |
| 2320 | if (map->getNumOperands() != opInfo.size()) |
| 2321 | return emitError( |
| 2322 | "symbol operand count and affine map symbol count must match"); |
| 2323 | |
| 2324 | // Resolve SSA uses. |
| 2325 | Type *affineIntType = builder.getAffineIntType(); |
| 2326 | unsigned numDims = map->getNumDims(); |
| 2327 | for (unsigned i = 0, e = opInfo.size(); i != e; ++i) { |
| 2328 | SSAValue *sval = resolveSSAUse(opInfo[i], affineIntType); |
| 2329 | if (!sval) |
| 2330 | return ParseFailure; |
| 2331 | |
| 2332 | auto *v = cast<MLValue>(sval); |
| 2333 | if (i < numDims && !v->isValidDim()) |
| 2334 | return emitError(opInfo[i].loc, "value '" + opInfo[i].name.str() + |
| 2335 | "' cannot be used as dimension id"); |
| 2336 | if (i >= numDims && !v->isValidSymbol()) |
| 2337 | return emitError(opInfo[i].loc, "value '" + opInfo[i].name.str() + |
| 2338 | "' cannot be used as symbol"); |
| 2339 | operands.push_back(v); |
| 2340 | } |
| 2341 | |
| 2342 | return ParseSuccess; |
| 2343 | } |
| 2344 | |
| 2345 | // Loop bound. |
| 2346 | /// |
| 2347 | /// lower-bound ::= `max`? affine-map dim-and-symbol-use-list | shorthand-bound |
| 2348 | /// upper-bound ::= `min`? affine-map dim-and-symbol-use-list | shorthand-bound |
| 2349 | /// shorthand-bound ::= ssa-id | `-`? integer-literal |
| 2350 | /// |
| 2351 | ParseResult MLFunctionParser::parseBound(SmallVectorImpl<MLValue *> &operands, |
| 2352 | AffineMap *&map, bool isLower) { |
| 2353 | // 'min' / 'max' prefixes are syntactic sugar. Ignore them. |
| 2354 | if (isLower) |
| 2355 | consumeIf(Token::kw_max); |
| 2356 | else |
| 2357 | consumeIf(Token::kw_min); |
| 2358 | |
| 2359 | // Parse full form - affine map followed by dim and symbol list. |
| 2360 | if (getToken().isAny(Token::hash_identifier, Token::l_paren)) { |
| 2361 | map = parseAffineMapReference(); |
| 2362 | if (!map) |
| 2363 | return ParseFailure; |
| 2364 | |
| 2365 | if (parseDimAndSymbolList(operands, map)) |
| 2366 | return ParseFailure; |
| 2367 | return ParseSuccess; |
| 2368 | } |
| 2369 | |
| 2370 | // Parse shorthand form. |
| 2371 | if (getToken().isAny(Token::minus, Token::integer)) { |
| 2372 | int64_t val; |
| 2373 | if (!parseIntConstant(val)) { |
| 2374 | map = builder.getConstantMap(val); |
| 2375 | return ParseSuccess; |
| 2376 | } |
| 2377 | return ParseFailure; |
| 2378 | } |
| 2379 | |
| 2380 | // Parse ssa-id as identity map. |
| 2381 | SSAUseInfo opInfo; |
| 2382 | if (parseSSAUse(opInfo)) |
| 2383 | return ParseFailure; |
| 2384 | |
| 2385 | // TODO: improve error message when SSA value is not an affine integer. |
| 2386 | // Currently it is 'use of value ... expects different type than prior uses' |
| 2387 | if (auto *value = resolveSSAUse(opInfo, builder.getAffineIntType())) |
| 2388 | operands.push_back(cast<MLValue>(value)); |
| 2389 | else |
| 2390 | return ParseFailure; |
| 2391 | |
| 2392 | // Create an identity map using dim id for an induction variable and |
| 2393 | // symbol otherwise. This representation is optimized for storage. |
| 2394 | // Analysis passes may expand it into a multi-dimensional map if desired. |
| 2395 | if (isa<ForStmt>(operands[0])) |
| 2396 | map = builder.getDimIdentityMap(); |
| 2397 | else |
| 2398 | map = builder.getSymbolIdentityMap(); |
| 2399 | |
| 2400 | return ParseSuccess; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2401 | } |
| 2402 | |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2403 | /// Parse condition. |
| 2404 | IntegerSet *MLFunctionParser::parseCondition() { |
| 2405 | return parseIntegerSetReference(); |
| 2406 | |
| 2407 | // TODO: Parse operands to the integer set. |
| 2408 | } |
| 2409 | |
| 2410 | /// Parse an affine constraint. |
| 2411 | /// affine-constraint ::= affine-expr `>=` `0` |
| 2412 | /// | affine-expr `==` `0` |
| 2413 | /// |
| 2414 | /// isEq is set to true if the parsed constraint is an equality, false if it is |
| 2415 | /// an inequality (greater than or equal). |
| 2416 | /// |
| 2417 | AffineExpr *AffineParser::parseAffineConstraint(bool *isEq) { |
| 2418 | AffineExpr *expr = parseAffineExpr(); |
| 2419 | if (!expr) |
| 2420 | return nullptr; |
| 2421 | |
| 2422 | if (consumeIf(Token::greater) && consumeIf(Token::equal) && |
| 2423 | getToken().is(Token::integer)) { |
| 2424 | auto dim = getToken().getUnsignedIntegerValue(); |
| 2425 | if (dim.hasValue() && dim.getValue() == 0) { |
| 2426 | consumeToken(Token::integer); |
| 2427 | *isEq = false; |
| 2428 | return expr; |
| 2429 | } |
| 2430 | return (emitError("expected '0' after '>='"), nullptr); |
| 2431 | } |
| 2432 | |
| 2433 | if (consumeIf(Token::equal) && consumeIf(Token::equal) && |
| 2434 | getToken().is(Token::integer)) { |
| 2435 | auto dim = getToken().getUnsignedIntegerValue(); |
| 2436 | if (dim.hasValue() && dim.getValue() == 0) { |
| 2437 | consumeToken(Token::integer); |
| 2438 | *isEq = true; |
| 2439 | return expr; |
| 2440 | } |
| 2441 | return (emitError("expected '0' after '=='"), nullptr); |
| 2442 | } |
| 2443 | |
| 2444 | return (emitError("expected '== 0' or '>= 0' at end of affine constraint"), |
| 2445 | nullptr); |
| 2446 | } |
| 2447 | |
| 2448 | /// Parse an integer set definition. |
| 2449 | /// integer-set-inline |
| 2450 | /// ::= dim-and-symbol-id-lists `:` affine-constraint-conjunction |
| 2451 | /// affine-constraint-conjunction ::= /*empty*/ |
| 2452 | /// | affine-constraint (`,` affine-constraint)* |
| 2453 | /// |
| 2454 | IntegerSet *AffineParser::parseIntegerSetInline() { |
| 2455 | unsigned numDims = 0, numSymbols = 0; |
| 2456 | |
| 2457 | // List of dimensional identifiers. |
| 2458 | if (parseDimIdList(numDims)) |
| 2459 | return nullptr; |
| 2460 | |
| 2461 | // Symbols are optional. |
| 2462 | if (getToken().is(Token::l_square)) { |
| 2463 | if (parseSymbolIdList(numSymbols)) |
| 2464 | return nullptr; |
| 2465 | } |
| 2466 | |
| 2467 | if (parseToken(Token::colon, "expected ':' or '['") || |
| 2468 | parseToken(Token::l_paren, |
| 2469 | "expected '(' at start of integer set constraint list")) |
| 2470 | return nullptr; |
| 2471 | |
| 2472 | SmallVector<AffineExpr *, 4> constraints; |
| 2473 | SmallVector<bool, 4> isEqs; |
| 2474 | auto parseElt = [&]() -> ParseResult { |
| 2475 | bool isEq; |
| 2476 | auto *elt = parseAffineConstraint(&isEq); |
| 2477 | ParseResult res = elt ? ParseSuccess : ParseFailure; |
| 2478 | if (elt) { |
| 2479 | constraints.push_back(elt); |
| 2480 | isEqs.push_back(isEq); |
| 2481 | } |
| 2482 | return res; |
| 2483 | }; |
| 2484 | |
| 2485 | // Parse a list of affine constraints (comma-separated) . |
| 2486 | // Grammar: affine-constraint-conjunct ::= `(` affine-constraint (`,` |
| 2487 | // affine-constraint)* `) |
| 2488 | if (parseCommaSeparatedListUntil(Token::r_paren, parseElt, true)) |
| 2489 | return nullptr; |
| 2490 | |
| 2491 | // Parsed a valid integer set. |
| 2492 | return builder.getIntegerSet(numDims, numSymbols, constraints, isEqs); |
| 2493 | } |
| 2494 | |
| 2495 | IntegerSet *Parser::parseIntegerSetInline() { |
| 2496 | return AffineParser(state).parseIntegerSetInline(); |
| 2497 | } |
| 2498 | |
| 2499 | /// Parse a reference to an integer set. |
| 2500 | /// integer-set ::= integer-set-id | integer-set-inline |
| 2501 | /// integer-set-id ::= `@@` suffix-id |
| 2502 | /// |
| 2503 | IntegerSet *Parser::parseIntegerSetReference() { |
| 2504 | if (getToken().is(Token::double_at_identifier)) { |
| 2505 | // Parse integer set identifier and verify that it exists. |
| 2506 | StringRef integerSetId = getTokenSpelling().drop_front(2); |
| 2507 | if (getState().integerSetDefinitions.count(integerSetId) == 0) |
| 2508 | return (emitError("undefined integer set id '" + integerSetId + "'"), |
| 2509 | nullptr); |
| 2510 | consumeToken(Token::double_at_identifier); |
| 2511 | return getState().integerSetDefinitions[integerSetId]; |
| 2512 | } |
| 2513 | // Try to parse an inline integer set definition. |
| 2514 | return parseIntegerSetInline(); |
| 2515 | } |
| 2516 | |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2517 | /// If statement. |
| 2518 | /// |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2519 | /// ml-if-head ::= `if` ml-if-cond `{` ml-stmt* `}` |
| 2520 | /// | ml-if-head `else` `if` ml-if-cond `{` ml-stmt* `}` |
| 2521 | /// ml-if-stmt ::= ml-if-head |
| 2522 | /// | ml-if-head `else` `{` ml-stmt* `}` |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2523 | /// |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2524 | ParseResult MLFunctionParser::parseIfStmt() { |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 2525 | auto loc = getToken().getLoc(); |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2526 | consumeToken(Token::kw_if); |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2527 | |
| 2528 | if (parseToken(Token::l_paren, "expected '('")) |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2529 | return ParseFailure; |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2530 | |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2531 | IntegerSet *condition = parseCondition(); |
| 2532 | if (!condition) |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2533 | return ParseFailure; |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2534 | |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2535 | if (parseToken(Token::r_paren, "expected ')'")) |
| 2536 | return ParseFailure; |
| 2537 | |
Chris Lattner | 1628fa0 | 2018-08-23 14:32:25 -0700 | [diff] [blame] | 2538 | IfStmt *ifStmt = builder.createIf(getEncodedSourceLocation(loc), condition); |
Chris Lattner | e787b32 | 2018-08-08 11:14:57 -0700 | [diff] [blame] | 2539 | IfClause *thenClause = ifStmt->getThen(); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2540 | |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2541 | // When parsing of an if statement body fails, the IR contains |
| 2542 | // the if statement with the portion of the body that has been |
| 2543 | // successfully parsed. |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2544 | if (parseStmtBlock(thenClause)) |
| 2545 | return ParseFailure; |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2546 | |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2547 | if (consumeIf(Token::kw_else)) { |
Chris Lattner | e787b32 | 2018-08-08 11:14:57 -0700 | [diff] [blame] | 2548 | auto *elseClause = ifStmt->createElse(); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2549 | if (parseElseClause(elseClause)) |
| 2550 | return ParseFailure; |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2551 | } |
| 2552 | |
Tatiana Shpeisman | 3838db7 | 2018-07-30 15:18:10 -0700 | [diff] [blame] | 2553 | // Reset insertion point to the current block. |
Chris Lattner | e787b32 | 2018-08-08 11:14:57 -0700 | [diff] [blame] | 2554 | builder.setInsertionPointToEnd(ifStmt->getBlock()); |
Tatiana Shpeisman | 3838db7 | 2018-07-30 15:18:10 -0700 | [diff] [blame] | 2555 | |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2556 | return ParseSuccess; |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2557 | } |
| 2558 | |
| 2559 | ParseResult MLFunctionParser::parseElseClause(IfClause *elseClause) { |
| 2560 | if (getToken().is(Token::kw_if)) { |
Chris Lattner | e787b32 | 2018-08-08 11:14:57 -0700 | [diff] [blame] | 2561 | builder.setInsertionPointToEnd(elseClause); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2562 | return parseIfStmt(); |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2563 | } |
| 2564 | |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2565 | return parseStmtBlock(elseClause); |
| 2566 | } |
| 2567 | |
| 2568 | /// |
| 2569 | /// Parse a list of statements ending with `return` or `}` |
| 2570 | /// |
| 2571 | ParseResult MLFunctionParser::parseStatements(StmtBlock *block) { |
Chris Lattner | 992a127 | 2018-08-07 12:02:37 -0700 | [diff] [blame] | 2572 | auto createOpFunc = [&](const OperationState &state) -> Operation * { |
| 2573 | return builder.createOperation(state); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2574 | }; |
| 2575 | |
Chris Lattner | e787b32 | 2018-08-08 11:14:57 -0700 | [diff] [blame] | 2576 | builder.setInsertionPointToEnd(block); |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2577 | |
Tatiana Shpeisman | d9b1d86 | 2018-08-09 12:28:58 -0700 | [diff] [blame] | 2578 | // Parse statements till we see '}' or 'return'. |
| 2579 | // Return statement is parsed separately to emit a more intuitive error |
| 2580 | // when '}' is missing after the return statement. |
| 2581 | while (getToken().isNot(Token::r_brace, Token::kw_return)) { |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2582 | switch (getToken().getKind()) { |
| 2583 | default: |
| 2584 | if (parseOperation(createOpFunc)) |
| 2585 | return ParseFailure; |
| 2586 | break; |
| 2587 | case Token::kw_for: |
| 2588 | if (parseForStmt()) |
| 2589 | return ParseFailure; |
| 2590 | break; |
| 2591 | case Token::kw_if: |
| 2592 | if (parseIfStmt()) |
| 2593 | return ParseFailure; |
| 2594 | break; |
| 2595 | } // end switch |
| 2596 | } |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2597 | |
Tatiana Shpeisman | d9b1d86 | 2018-08-09 12:28:58 -0700 | [diff] [blame] | 2598 | // Parse the return statement. |
| 2599 | if (getToken().is(Token::kw_return)) |
| 2600 | if (parseOperation(createOpFunc)) |
| 2601 | return ParseFailure; |
| 2602 | |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2603 | return ParseSuccess; |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2604 | } |
| 2605 | |
| 2606 | /// |
| 2607 | /// Parse `{` ml-stmt* `}` |
| 2608 | /// |
Tatiana Shpeisman | 1bcfe98 | 2018-07-13 13:03:13 -0700 | [diff] [blame] | 2609 | ParseResult MLFunctionParser::parseStmtBlock(StmtBlock *block) { |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2610 | if (parseToken(Token::l_brace, "expected '{' before statement list") || |
| 2611 | parseStatements(block) || |
Tatiana Shpeisman | d9b1d86 | 2018-08-09 12:28:58 -0700 | [diff] [blame] | 2612 | parseToken(Token::r_brace, "expected '}' after statement list")) |
Tatiana Shpeisman | 565b964 | 2018-07-16 11:47:09 -0700 | [diff] [blame] | 2613 | return ParseFailure; |
| 2614 | |
Tatiana Shpeisman | bf079c9 | 2018-07-03 17:51:28 -0700 | [diff] [blame] | 2615 | return ParseSuccess; |
| 2616 | } |
| 2617 | |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 2618 | //===----------------------------------------------------------------------===// |
| 2619 | // Top-level entity parsing. |
| 2620 | //===----------------------------------------------------------------------===// |
| 2621 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2622 | namespace { |
| 2623 | /// This parser handles entities that are only valid at the top level of the |
| 2624 | /// file. |
| 2625 | class ModuleParser : public Parser { |
| 2626 | public: |
| 2627 | explicit ModuleParser(ParserState &state) : Parser(state) {} |
| 2628 | |
| 2629 | ParseResult parseModule(); |
| 2630 | |
| 2631 | private: |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2632 | ParseResult finalizeModule(); |
| 2633 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2634 | ParseResult parseAffineMapDef(); |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2635 | ParseResult parseIntegerSetDef(); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2636 | |
| 2637 | // Functions. |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2638 | ParseResult parseMLArgumentList(SmallVectorImpl<Type *> &argTypes, |
| 2639 | SmallVectorImpl<StringRef> &argNames); |
| 2640 | ParseResult parseFunctionSignature(StringRef &name, FunctionType *&type, |
| 2641 | SmallVectorImpl<StringRef> *argNames); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2642 | ParseResult parseExtFunc(); |
| 2643 | ParseResult parseCFGFunc(); |
| 2644 | ParseResult parseMLFunc(); |
| 2645 | }; |
| 2646 | } // end anonymous namespace |
| 2647 | |
| 2648 | /// Affine map declaration. |
| 2649 | /// |
| 2650 | /// affine-map-def ::= affine-map-id `=` affine-map-inline |
| 2651 | /// |
| 2652 | ParseResult ModuleParser::parseAffineMapDef() { |
| 2653 | assert(getToken().is(Token::hash_identifier)); |
| 2654 | |
| 2655 | StringRef affineMapId = getTokenSpelling().drop_front(); |
| 2656 | |
| 2657 | // Check for redefinitions. |
Nicolas Vasilache | 9729815 | 2018-08-27 10:10:42 -0700 | [diff] [blame] | 2658 | auto *&entry = getState().affineMapDefinitions[affineMapId]; |
| 2659 | if (entry) |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2660 | return emitError("redefinition of affine map id '" + affineMapId + "'"); |
| 2661 | |
| 2662 | consumeToken(Token::hash_identifier); |
| 2663 | |
| 2664 | // Parse the '=' |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2665 | if (parseToken(Token::equal, |
| 2666 | "expected '=' in affine map outlined definition")) |
| 2667 | return ParseFailure; |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2668 | |
Nicolas Vasilache | 9729815 | 2018-08-27 10:10:42 -0700 | [diff] [blame] | 2669 | entry = parseAffineMapInline(); |
| 2670 | if (!entry) |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2671 | return ParseFailure; |
| 2672 | |
| 2673 | return ParseSuccess; |
| 2674 | } |
| 2675 | |
| 2676 | /// Integer set declaration. |
| 2677 | /// |
| 2678 | /// integer-set-decl ::= integer-set-id `=` integer-set-inline |
| 2679 | /// |
| 2680 | ParseResult ModuleParser::parseIntegerSetDef() { |
| 2681 | assert(getToken().is(Token::double_at_identifier)); |
| 2682 | |
| 2683 | StringRef integerSetId = getTokenSpelling().drop_front(2); |
| 2684 | |
| 2685 | // Check for redefinitions (a default entry is created if one doesn't exist) |
Nicolas Vasilache | 9729815 | 2018-08-27 10:10:42 -0700 | [diff] [blame] | 2686 | auto *&entry = getState().integerSetDefinitions[integerSetId]; |
| 2687 | if (entry) |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2688 | return emitError("redefinition of integer set id '" + integerSetId + "'"); |
| 2689 | |
| 2690 | consumeToken(Token::double_at_identifier); |
| 2691 | |
| 2692 | // Parse the '=' |
| 2693 | if (parseToken(Token::equal, |
| 2694 | "expected '=' in outlined integer set definition")) |
| 2695 | return ParseFailure; |
| 2696 | |
Nicolas Vasilache | 9729815 | 2018-08-27 10:10:42 -0700 | [diff] [blame] | 2697 | entry = parseIntegerSetInline(); |
| 2698 | if (!entry) |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2699 | return ParseFailure; |
| 2700 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2701 | return ParseSuccess; |
| 2702 | } |
| 2703 | |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2704 | /// Parse a (possibly empty) list of MLFunction arguments with types. |
| 2705 | /// |
| 2706 | /// ml-argument ::= ssa-id `:` type |
| 2707 | /// ml-argument-list ::= ml-argument (`,` ml-argument)* | /*empty*/ |
| 2708 | /// |
| 2709 | ParseResult |
| 2710 | ModuleParser::parseMLArgumentList(SmallVectorImpl<Type *> &argTypes, |
| 2711 | SmallVectorImpl<StringRef> &argNames) { |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2712 | consumeToken(Token::l_paren); |
| 2713 | |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2714 | auto parseElt = [&]() -> ParseResult { |
| 2715 | // Parse argument name |
| 2716 | if (getToken().isNot(Token::percent_identifier)) |
| 2717 | return emitError("expected SSA identifier"); |
| 2718 | |
Tatiana Shpeisman | bc3c749 | 2018-08-06 11:54:39 -0700 | [diff] [blame] | 2719 | StringRef name = getTokenSpelling(); |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2720 | consumeToken(Token::percent_identifier); |
| 2721 | argNames.push_back(name); |
| 2722 | |
Chris Lattner | f7702a6 | 2018-07-23 17:30:01 -0700 | [diff] [blame] | 2723 | if (parseToken(Token::colon, "expected ':'")) |
| 2724 | return ParseFailure; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2725 | |
| 2726 | // Parse argument type |
| 2727 | auto elt = parseType(); |
| 2728 | if (!elt) |
| 2729 | return ParseFailure; |
| 2730 | argTypes.push_back(elt); |
| 2731 | |
| 2732 | return ParseSuccess; |
| 2733 | }; |
| 2734 | |
Chris Lattner | 4074644 | 2018-07-21 14:32:09 -0700 | [diff] [blame] | 2735 | return parseCommaSeparatedListUntil(Token::r_paren, parseElt); |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2736 | } |
| 2737 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2738 | /// Parse a function signature, starting with a name and including the parameter |
| 2739 | /// list. |
| 2740 | /// |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2741 | /// argument-list ::= type (`,` type)* | /*empty*/ | ml-argument-list |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2742 | /// function-signature ::= function-id `(` argument-list `)` (`->` type-list)? |
| 2743 | /// |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2744 | ParseResult |
| 2745 | ModuleParser::parseFunctionSignature(StringRef &name, FunctionType *&type, |
| 2746 | SmallVectorImpl<StringRef> *argNames) { |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2747 | if (getToken().isNot(Token::at_identifier)) |
| 2748 | return emitError("expected a function identifier like '@foo'"); |
| 2749 | |
| 2750 | name = getTokenSpelling().drop_front(); |
| 2751 | consumeToken(Token::at_identifier); |
| 2752 | |
| 2753 | if (getToken().isNot(Token::l_paren)) |
| 2754 | return emitError("expected '(' in function signature"); |
| 2755 | |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2756 | SmallVector<Type *, 4> argTypes; |
| 2757 | ParseResult parseResult; |
| 2758 | |
| 2759 | if (argNames) |
| 2760 | parseResult = parseMLArgumentList(argTypes, *argNames); |
| 2761 | else |
| 2762 | parseResult = parseTypeList(argTypes); |
| 2763 | |
| 2764 | if (parseResult) |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2765 | return ParseFailure; |
| 2766 | |
| 2767 | // Parse the return type if present. |
| 2768 | SmallVector<Type *, 4> results; |
| 2769 | if (consumeIf(Token::arrow)) { |
| 2770 | if (parseTypeList(results)) |
| 2771 | return ParseFailure; |
| 2772 | } |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2773 | type = builder.getFunctionType(argTypes, results); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2774 | return ParseSuccess; |
| 2775 | } |
| 2776 | |
| 2777 | /// External function declarations. |
| 2778 | /// |
| 2779 | /// ext-func ::= `extfunc` function-signature |
| 2780 | /// |
| 2781 | ParseResult ModuleParser::parseExtFunc() { |
| 2782 | consumeToken(Token::kw_extfunc); |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2783 | auto loc = getToken().getLoc(); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2784 | |
| 2785 | StringRef name; |
| 2786 | FunctionType *type = nullptr; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2787 | if (parseFunctionSignature(name, type, /*arguments*/ nullptr)) |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2788 | return ParseFailure; |
| 2789 | |
| 2790 | // Okay, the external function definition was parsed correctly. |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2791 | auto *function = new ExtFunction(name, type); |
| 2792 | getModule()->getFunctions().push_back(function); |
| 2793 | |
| 2794 | // Verify no name collision / redefinition. |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2795 | if (function->getName() != name) |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2796 | return emitError(loc, |
| 2797 | "redefinition of function named '" + name.str() + "'"); |
| 2798 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2799 | return ParseSuccess; |
| 2800 | } |
| 2801 | |
| 2802 | /// CFG function declarations. |
| 2803 | /// |
| 2804 | /// cfg-func ::= `cfgfunc` function-signature `{` basic-block+ `}` |
| 2805 | /// |
| 2806 | ParseResult ModuleParser::parseCFGFunc() { |
| 2807 | consumeToken(Token::kw_cfgfunc); |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2808 | auto loc = getToken().getLoc(); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2809 | |
| 2810 | StringRef name; |
| 2811 | FunctionType *type = nullptr; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2812 | if (parseFunctionSignature(name, type, /*arguments*/ nullptr)) |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2813 | return ParseFailure; |
| 2814 | |
| 2815 | // Okay, the CFG function signature was parsed correctly, create the function. |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2816 | auto *function = new CFGFunction(name, type); |
| 2817 | getModule()->getFunctions().push_back(function); |
| 2818 | |
| 2819 | // Verify no name collision / redefinition. |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2820 | if (function->getName() != name) |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2821 | return emitError(loc, |
| 2822 | "redefinition of function named '" + name.str() + "'"); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2823 | |
| 2824 | return CFGFunctionParser(getState(), function).parseFunctionBody(); |
| 2825 | } |
| 2826 | |
| 2827 | /// ML function declarations. |
| 2828 | /// |
| 2829 | /// ml-func ::= `mlfunc` ml-func-signature `{` ml-stmt* ml-return-stmt `}` |
| 2830 | /// |
| 2831 | ParseResult ModuleParser::parseMLFunc() { |
| 2832 | consumeToken(Token::kw_mlfunc); |
| 2833 | |
| 2834 | StringRef name; |
| 2835 | FunctionType *type = nullptr; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2836 | SmallVector<StringRef, 4> argNames; |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2837 | |
Tatiana Shpeisman | bc3c749 | 2018-08-06 11:54:39 -0700 | [diff] [blame] | 2838 | auto loc = getToken().getLoc(); |
Tatiana Shpeisman | 1da50c4 | 2018-07-19 09:52:39 -0700 | [diff] [blame] | 2839 | if (parseFunctionSignature(name, type, &argNames)) |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2840 | return ParseFailure; |
| 2841 | |
| 2842 | // Okay, the ML function signature was parsed correctly, create the function. |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2843 | auto *function = MLFunction::create(name, type); |
| 2844 | getModule()->getFunctions().push_back(function); |
| 2845 | |
| 2846 | // Verify no name collision / redefinition. |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2847 | if (function->getName() != name) |
Chris Lattner | 974a876 | 2018-08-17 16:49:42 -0700 | [diff] [blame] | 2848 | return emitError(loc, |
| 2849 | "redefinition of function named '" + name.str() + "'"); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2850 | |
Tatiana Shpeisman | bc3c749 | 2018-08-06 11:54:39 -0700 | [diff] [blame] | 2851 | // Create the parser. |
| 2852 | auto parser = MLFunctionParser(getState(), function); |
| 2853 | |
| 2854 | // Add definitions of the function arguments. |
| 2855 | for (unsigned i = 0, e = function->getNumArguments(); i != e; ++i) { |
| 2856 | if (parser.addDefinition({argNames[i], 0, loc}, function->getArgument(i))) |
| 2857 | return ParseFailure; |
| 2858 | } |
| 2859 | |
| 2860 | return parser.parseFunctionBody(); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2861 | } |
| 2862 | |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 2863 | /// Given an attribute that could refer to a function attribute in the remapping |
| 2864 | /// table, walk it and rewrite it to use the mapped function. If it doesn't |
| 2865 | /// refer to anything in the table, then it is returned unmodified. |
| 2866 | static Attribute * |
| 2867 | remapFunctionAttrs(Attribute *input, |
| 2868 | DenseMap<FunctionAttr *, FunctionAttr *> &remappingTable, |
| 2869 | MLIRContext *context) { |
| 2870 | // Most attributes are trivially unrelated to function attributes, skip them |
| 2871 | // rapidly. |
| 2872 | if (!input->isOrContainsFunction()) |
| 2873 | return input; |
| 2874 | |
| 2875 | // If we have a function attribute, remap it. |
| 2876 | if (auto *fnAttr = dyn_cast<FunctionAttr>(input)) { |
| 2877 | auto it = remappingTable.find(fnAttr); |
| 2878 | return it != remappingTable.end() ? it->second : input; |
| 2879 | } |
| 2880 | |
| 2881 | // Otherwise, we must have an array attribute, remap the elements. |
| 2882 | auto *arrayAttr = cast<ArrayAttr>(input); |
| 2883 | SmallVector<Attribute *, 8> remappedElts; |
| 2884 | bool anyChange = false; |
| 2885 | for (auto *elt : arrayAttr->getValue()) { |
| 2886 | auto *newElt = remapFunctionAttrs(elt, remappingTable, context); |
| 2887 | remappedElts.push_back(newElt); |
| 2888 | anyChange |= (elt != newElt); |
| 2889 | } |
| 2890 | |
| 2891 | if (!anyChange) |
| 2892 | return input; |
| 2893 | |
| 2894 | return ArrayAttr::get(remappedElts, context); |
| 2895 | } |
| 2896 | |
| 2897 | /// Remap function attributes to resolve forward references to their actual |
| 2898 | /// definition. |
| 2899 | static void remapFunctionAttrsInOperation( |
| 2900 | Operation *op, DenseMap<FunctionAttr *, FunctionAttr *> &remappingTable) { |
| 2901 | for (auto attr : op->getAttrs()) { |
| 2902 | // Do the remapping, if we got the same thing back, then it must contain |
| 2903 | // functions that aren't getting remapped. |
| 2904 | auto *newVal = |
| 2905 | remapFunctionAttrs(attr.second, remappingTable, op->getContext()); |
| 2906 | if (newVal == attr.second) |
| 2907 | continue; |
| 2908 | |
| 2909 | // Otherwise, replace the existing attribute with the new one. It is safe |
| 2910 | // to mutate the attribute list while we walk it because underlying |
| 2911 | // attribute lists are uniqued and immortal. |
| 2912 | op->setAttr(attr.first, newVal); |
| 2913 | } |
| 2914 | } |
| 2915 | |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2916 | /// Finish the end of module parsing - when the result is valid, do final |
| 2917 | /// checking. |
| 2918 | ParseResult ModuleParser::finalizeModule() { |
| 2919 | |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 2920 | // Resolve all forward references, building a remapping table of attributes. |
| 2921 | DenseMap<FunctionAttr *, FunctionAttr *> remappingTable; |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2922 | for (auto forwardRef : getState().functionForwardRefs) { |
| 2923 | auto name = forwardRef.first; |
| 2924 | |
| 2925 | // Resolve the reference. |
| 2926 | auto *resolvedFunction = getModule()->getNamedFunction(name); |
| 2927 | if (!resolvedFunction) |
| 2928 | return emitError(forwardRef.second.second, |
| 2929 | "reference to undefined function '" + name.str() + "'"); |
| 2930 | |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 2931 | remappingTable[builder.getFunctionAttr(forwardRef.second.first)] = |
| 2932 | builder.getFunctionAttr(resolvedFunction); |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2933 | } |
| 2934 | |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 2935 | // If there was nothing to remap, then we're done. |
| 2936 | if (remappingTable.empty()) |
| 2937 | return ParseSuccess; |
| 2938 | |
| 2939 | // Otherwise, walk the entire module replacing uses of one attribute set with |
| 2940 | // the correct ones. |
| 2941 | for (auto &fn : *getModule()) { |
| 2942 | if (auto *cfgFn = dyn_cast<CFGFunction>(&fn)) { |
| 2943 | for (auto &bb : *cfgFn) { |
| 2944 | for (auto &inst : bb) { |
| 2945 | remapFunctionAttrsInOperation(&inst, remappingTable); |
| 2946 | } |
| 2947 | } |
| 2948 | } |
| 2949 | |
| 2950 | // Otherwise, look at MLFunctions. We ignore ExtFunctions. |
| 2951 | auto *mlFn = dyn_cast<MLFunction>(&fn); |
| 2952 | if (!mlFn) |
| 2953 | continue; |
| 2954 | |
| 2955 | struct MLFnWalker : public StmtWalker<MLFnWalker> { |
| 2956 | MLFnWalker(DenseMap<FunctionAttr *, FunctionAttr *> &remappingTable) |
| 2957 | : remappingTable(remappingTable) {} |
| 2958 | void visitOperationStmt(OperationStmt *opStmt) { |
| 2959 | remapFunctionAttrsInOperation(opStmt, remappingTable); |
| 2960 | } |
| 2961 | |
| 2962 | DenseMap<FunctionAttr *, FunctionAttr *> &remappingTable; |
| 2963 | }; |
| 2964 | |
| 2965 | MLFnWalker(remappingTable).walk(mlFn); |
| 2966 | } |
| 2967 | |
| 2968 | // Now that all references to the forward definition placeholders are |
| 2969 | // resolved, we can deallocate the placeholders. |
| 2970 | for (auto forwardRef : getState().functionForwardRefs) |
| 2971 | forwardRef.second.first->destroy(); |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2972 | return ParseSuccess; |
| 2973 | } |
| 2974 | |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 2975 | /// This is the top-level module parser. |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2976 | ParseResult ModuleParser::parseModule() { |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 2977 | while (1) { |
Chris Lattner | 48af7d1 | 2018-07-09 19:05:38 -0700 | [diff] [blame] | 2978 | switch (getToken().getKind()) { |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 2979 | default: |
| 2980 | emitError("expected a top level entity"); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2981 | return ParseFailure; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 2982 | |
Uday Bondhugula | 015cbb1 | 2018-07-03 20:16:08 -0700 | [diff] [blame] | 2983 | // If we got to the end of the file, then we're done. |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 2984 | case Token::eof: |
Chris Lattner | 4613d9e | 2018-08-19 21:17:22 -0700 | [diff] [blame] | 2985 | return finalizeModule(); |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 2986 | |
| 2987 | // If we got an error token, then the lexer already emitted an error, just |
| 2988 | // stop. Someday we could introduce error recovery if there was demand for |
| 2989 | // it. |
| 2990 | case Token::error: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 2991 | return ParseFailure; |
| 2992 | |
| 2993 | case Token::hash_identifier: |
| 2994 | if (parseAffineMapDef()) |
| 2995 | return ParseFailure; |
| 2996 | break; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 2997 | |
Uday Bondhugula | bc53562 | 2018-08-07 14:24:38 -0700 | [diff] [blame] | 2998 | case Token::double_at_identifier: |
| 2999 | if (parseIntegerSetDef()) |
| 3000 | return ParseFailure; |
| 3001 | break; |
| 3002 | |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 3003 | case Token::kw_extfunc: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 3004 | if (parseExtFunc()) |
| 3005 | return ParseFailure; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 3006 | break; |
| 3007 | |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 3008 | case Token::kw_cfgfunc: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 3009 | if (parseCFGFunc()) |
| 3010 | return ParseFailure; |
MLIR Team | f85a626 | 2018-06-27 11:03:08 -0700 | [diff] [blame] | 3011 | break; |
Chris Lattner | 4c95a50 | 2018-06-23 16:03:42 -0700 | [diff] [blame] | 3012 | |
Tatiana Shpeisman | c96b587 | 2018-06-28 17:02:32 -0700 | [diff] [blame] | 3013 | case Token::kw_mlfunc: |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 3014 | if (parseMLFunc()) |
| 3015 | return ParseFailure; |
Tatiana Shpeisman | c96b587 | 2018-06-28 17:02:32 -0700 | [diff] [blame] | 3016 | break; |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 3017 | } |
| 3018 | } |
| 3019 | } |
| 3020 | |
| 3021 | //===----------------------------------------------------------------------===// |
| 3022 | |
Jacques Pienaar | 7b82970 | 2018-07-03 13:24:09 -0700 | [diff] [blame] | 3023 | void mlir::defaultErrorReporter(const llvm::SMDiagnostic &error) { |
| 3024 | const auto &sourceMgr = *error.getSourceMgr(); |
| 3025 | sourceMgr.PrintMessage(error.getLoc(), error.getKind(), error.getMessage()); |
| 3026 | } |
| 3027 | |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 3028 | /// This parses the file specified by the indicated SourceMgr and returns an |
| 3029 | /// MLIR module if it was valid. If not, it emits diagnostics and returns null. |
Jacques Pienaar | 9c411be | 2018-06-24 19:17:35 -0700 | [diff] [blame] | 3030 | Module *mlir::parseSourceFile(llvm::SourceMgr &sourceMgr, MLIRContext *context, |
Jacques Pienaar | 7b82970 | 2018-07-03 13:24:09 -0700 | [diff] [blame] | 3031 | SMDiagnosticHandlerTy errorReporter) { |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 3032 | if (!errorReporter) |
| 3033 | errorReporter = defaultErrorReporter; |
| 3034 | |
| 3035 | // We are going to replace the context's handler and redirect it to use the |
| 3036 | // error reporter. Save the existing handler and reinstate it when we're |
| 3037 | // done. |
| 3038 | auto existingContextHandler = context->getDiagnosticHandler(); |
| 3039 | |
| 3040 | // Install a new handler that uses the error reporter. |
| 3041 | context->registerDiagnosticHandler([&](Attribute *location, StringRef message, |
| 3042 | MLIRContext::DiagnosticKind kind) { |
| 3043 | auto offset = cast<IntegerAttr>(location)->getValue(); |
| 3044 | auto *mainBuffer = sourceMgr.getMemoryBuffer(sourceMgr.getMainFileID()); |
| 3045 | auto ptr = mainBuffer->getBufferStart() + offset; |
| 3046 | SourceMgr::DiagKind diagKind; |
| 3047 | switch (kind) { |
| 3048 | case MLIRContext::DiagnosticKind::Error: |
| 3049 | diagKind = SourceMgr::DK_Error; |
| 3050 | break; |
| 3051 | case MLIRContext::DiagnosticKind::Warning: |
| 3052 | diagKind = SourceMgr::DK_Warning; |
| 3053 | break; |
| 3054 | case MLIRContext::DiagnosticKind::Note: |
| 3055 | diagKind = SourceMgr::DK_Note; |
| 3056 | break; |
| 3057 | } |
| 3058 | errorReporter( |
| 3059 | sourceMgr.GetMessage(SMLoc::getFromPointer(ptr), diagKind, message)); |
| 3060 | }); |
| 3061 | |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 3062 | // This is the result module we are parsing into. |
| 3063 | std::unique_ptr<Module> module(new Module(context)); |
| 3064 | |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 3065 | ParserState state(sourceMgr, module.get(), errorReporter); |
| 3066 | if (ModuleParser(state).parseModule()) { |
| 3067 | context->registerDiagnosticHandler(existingContextHandler); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 3068 | return nullptr; |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 3069 | } |
Chris Lattner | 21e67f6 | 2018-07-06 10:46:19 -0700 | [diff] [blame] | 3070 | |
| 3071 | // Make sure the parse module has no other structural problems detected by the |
| 3072 | // verifier. |
Chris Lattner | ea5c3dc | 2018-08-21 08:42:19 -0700 | [diff] [blame] | 3073 | std::string errorResult; |
| 3074 | module->verify(&errorResult); |
| 3075 | |
| 3076 | // We don't have location information for general verifier errors, so emit the |
| 3077 | // error on the first line. |
| 3078 | if (!errorResult.empty()) { |
| 3079 | auto *mainBuffer = sourceMgr.getMemoryBuffer(sourceMgr.getMainFileID()); |
| 3080 | errorReporter(sourceMgr.GetMessage( |
| 3081 | SMLoc::getFromPointer(mainBuffer->getBufferStart()), |
| 3082 | SourceMgr::DK_Error, errorResult)); |
| 3083 | return nullptr; |
| 3084 | } |
| 3085 | |
| 3086 | context->registerDiagnosticHandler(existingContextHandler); |
Chris Lattner | 2e595eb | 2018-07-10 10:08:27 -0700 | [diff] [blame] | 3087 | return module.release(); |
Chris Lattner | e79379a | 2018-06-22 10:39:19 -0700 | [diff] [blame] | 3088 | } |